21173880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1$

素因数の和:318

約数の個数: 192

約数和(自身を含む): 79863840

約数和(自身を除く): 58689960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 49, 52, 56, 60, 65, 70, 78, 84, 91, 98, 104, 105, 120, 130, 140, 147, 156, 168, 182, 195, 196, 210, 245, 260, 273, 277, 280, 294, 312, 364, 390, 392, 420, 455, 490, 520, 546, 554, 588, 637, 728, 735, 780, 831, 840, 910, 980, 1092, 1108, 1176, 1274, 1365, 1385, 1470, 1560, 1662, 1820, 1911, 1939, 1960, 2184, 2216, 2548, 2730, 2770, 2940, 3185, 3324, 3601, 3640, 3822, 3878, 4155, 5096, 5460, 5540, 5817, 5880, 6370, 6648, 7202, 7644, 7756, 8310, 9555, 9695, 10803, 10920, 11080, 11634, 12740, 13573, 14404, 15288, 15512, 16620, 18005, 19110, 19390, 21606, 23268, 25207, 25480, 27146, 28808, 29085, 33240, 36010, 38220, 38780, 40719, 43212, 46536, 50414, 54015, 54292, 58170, 67865, 72020, 75621, 76440, 77560, 81438, 86424, 100828, 108030, 108584, 116340, 126035, 135730, 144040, 151242, 162876, 176449, 201656, 203595, 216060, 232680, 252070, 271460, 302484, 325752, 352898, 378105, 407190, 432120, 504140, 529347, 542920, 604968, 705796, 756210, 814380, 882245, 1008280, 1058694, 1411592, 1512420, 1628760, 1764490, 2117388, 2646735, 3024840, 3528980, 4234776, 5293470, 7057960, 10586940, 21173880]

約数ペア:

[(1, 21173880), (2, 10586940), (3, 7057960), (4, 5293470), (5, 4234776), (6, 3528980), (7, 3024840), (8, 2646735), (10, 2117388), (12, 1764490), (13, 1628760), (14, 1512420), (15, 1411592), (20, 1058694), (21, 1008280), (24, 882245), (26, 814380), (28, 756210), (30, 705796), (35, 604968), (39, 542920), (40, 529347), (42, 504140), (49, 432120), (52, 407190), (56, 378105), (60, 352898), (65, 325752), (70, 302484), (78, 271460), (84, 252070), (91, 232680), (98, 216060), (104, 203595), (105, 201656), (120, 176449), (130, 162876), (140, 151242), (147, 144040), (156, 135730), (168, 126035), (182, 116340), (195, 108584), (196, 108030), (210, 100828), (245, 86424), (260, 81438), (273, 77560), (277, 76440), (280, 75621), (294, 72020), (312, 67865), (364, 58170), (390, 54292), (392, 54015), (420, 50414), (455, 46536), (490, 43212), (520, 40719), (546, 38780), (554, 38220), (588, 36010), (637, 33240), (728, 29085), (735, 28808), (780, 27146), (831, 25480), (840, 25207), (910, 23268), (980, 21606), (1092, 19390), (1108, 19110), (1176, 18005), (1274, 16620), (1365, 15512), (1385, 15288), (1470, 14404), (1560, 13573), (1662, 12740), (1820, 11634), (1911, 11080), (1939, 10920), (1960, 10803), (2184, 9695), (2216, 9555), (2548, 8310), (2730, 7756), (2770, 7644), (2940, 7202), (3185, 6648), (3324, 6370), (3601, 5880), (3640, 5817), (3822, 5540), (3878, 5460), (4155, 5096)]