256308780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:225

約数の個数: 288

約数和(自身を含む): 932649984

約数和(自身を除く): 676341204

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 23, 26, 28, 30, 35, 39, 42, 46, 52, 60, 65, 69, 70, 78, 84, 91, 92, 105, 115, 130, 138, 140, 156, 157, 161, 169, 182, 195, 210, 230, 260, 273, 276, 299, 314, 322, 338, 345, 364, 390, 420, 455, 460, 471, 483, 507, 546, 598, 628, 644, 676, 690, 780, 785, 805, 845, 897, 910, 942, 966, 1014, 1092, 1099, 1183, 1196, 1365, 1380, 1495, 1570, 1610, 1690, 1794, 1820, 1884, 1932, 2028, 2041, 2093, 2198, 2355, 2366, 2415, 2535, 2730, 2990, 3140, 3220, 3297, 3380, 3549, 3588, 3611, 3887, 4082, 4186, 4396, 4485, 4710, 4732, 4830, 5070, 5460, 5495, 5915, 5980, 6123, 6279, 6594, 7098, 7222, 7774, 8164, 8372, 8970, 9420, 9660, 10140, 10205, 10465, 10833, 10990, 11661, 11830, 12246, 12558, 13188, 14196, 14287, 14444, 15548, 16485, 17745, 17940, 18055, 19435, 20410, 20930, 21666, 21980, 23322, 23660, 24492, 25116, 25277, 26533, 27209, 28574, 30615, 31395, 32970, 35490, 36110, 38870, 40820, 41860, 42861, 43332, 46644, 46943, 50554, 53066, 54165, 54418, 57148, 58305, 61230, 62790, 65940, 70980, 71435, 72220, 75831, 77740, 79599, 81627, 85722, 93886, 101108, 106132, 108330, 108836, 116610, 122460, 125580, 126385, 132665, 136045, 140829, 142870, 151662, 159198, 163254, 171444, 185731, 187772, 214305, 216660, 233220, 234715, 252770, 265330, 272090, 281658, 285740, 303324, 318396, 326508, 328601, 371462, 379155, 397995, 408135, 428610, 469430, 505540, 530660, 544180, 557193, 563316, 610259, 657202, 704145, 742924, 758310, 795990, 816270, 857220, 928655, 938860, 985803, 1114386, 1220518, 1314404, 1408290, 1516620, 1591980, 1632540, 1643005, 1830777, 1857310, 1971606, 2228772, 2441036, 2785965, 2816580, 3051295, 3286010, 3661554, 3714620, 3943212, 4271813, 4929015, 5571930, 6102590, 6572020, 7323108, 8543626, 9153885, 9858030, 11143860, 12205180, 12815439, 17087252, 18307770, 19716060, 21359065, 25630878, 36615540, 42718130, 51261756, 64077195, 85436260, 128154390, 256308780]

約数ペア:

[(1, 256308780), (2, 128154390), (3, 85436260), (4, 64077195), (5, 51261756), (6, 42718130), (7, 36615540), (10, 25630878), (12, 21359065), (13, 19716060), (14, 18307770), (15, 17087252), (20, 12815439), (21, 12205180), (23, 11143860), (26, 9858030), (28, 9153885), (30, 8543626), (35, 7323108), (39, 6572020), (42, 6102590), (46, 5571930), (52, 4929015), (60, 4271813), (65, 3943212), (69, 3714620), (70, 3661554), (78, 3286010), (84, 3051295), (91, 2816580), (92, 2785965), (105, 2441036), (115, 2228772), (130, 1971606), (138, 1857310), (140, 1830777), (156, 1643005), (157, 1632540), (161, 1591980), (169, 1516620), (182, 1408290), (195, 1314404), (210, 1220518), (230, 1114386), (260, 985803), (273, 938860), (276, 928655), (299, 857220), (314, 816270), (322, 795990), (338, 758310), (345, 742924), (364, 704145), (390, 657202), (420, 610259), (455, 563316), (460, 557193), (471, 544180), (483, 530660), (507, 505540), (546, 469430), (598, 428610), (628, 408135), (644, 397995), (676, 379155), (690, 371462), (780, 328601), (785, 326508), (805, 318396), (845, 303324), (897, 285740), (910, 281658), (942, 272090), (966, 265330), (1014, 252770), (1092, 234715), (1099, 233220), (1183, 216660), (1196, 214305), (1365, 187772), (1380, 185731), (1495, 171444), (1570, 163254), (1610, 159198), (1690, 151662), (1794, 142870), (1820, 140829), (1884, 136045), (1932, 132665), (2028, 126385), (2041, 125580), (2093, 122460), (2198, 116610), (2355, 108836), (2366, 108330), (2415, 106132), (2535, 101108), (2730, 93886), (2990, 85722), (3140, 81627), (3220, 79599), (3297, 77740), (3380, 75831), (3549, 72220), (3588, 71435), (3611, 70980), (3887, 65940), (4082, 62790), (4186, 61230), (4396, 58305), (4485, 57148), (4710, 54418), (4732, 54165), (4830, 53066), (5070, 50554), (5460, 46943), (5495, 46644), (5915, 43332), (5980, 42861), (6123, 41860), (6279, 40820), (6594, 38870), (7098, 36110), (7222, 35490), (7774, 32970), (8164, 31395), (8372, 30615), (8970, 28574), (9420, 27209), (9660, 26533), (10140, 25277), (10205, 25116), (10465, 24492), (10833, 23660), (10990, 23322), (11661, 21980), (11830, 21666), (12246, 20930), (12558, 20410), (13188, 19435), (14196, 18055), (14287, 17940), (14444, 17745), (15548, 16485)]