66981460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:210

約数の個数: 144

約数和(自身を含む): 184464000

約数和(自身を除く): 117482540

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 149, 169, 182, 190, 247, 260, 266, 298, 338, 364, 380, 455, 494, 532, 596, 665, 676, 745, 845, 910, 988, 1043, 1183, 1235, 1330, 1490, 1690, 1729, 1820, 1937, 2086, 2366, 2470, 2660, 2831, 2980, 3211, 3380, 3458, 3874, 4172, 4732, 4940, 5215, 5662, 5915, 6422, 6916, 7748, 8645, 9685, 10430, 11324, 11830, 12844, 13559, 14155, 16055, 17290, 19370, 19817, 20860, 22477, 23660, 25181, 27118, 28310, 32110, 34580, 36803, 38740, 39634, 44954, 50362, 54236, 56620, 64220, 67795, 73606, 79268, 89908, 99085, 100724, 112385, 125905, 135590, 147212, 176267, 184015, 198170, 224770, 251810, 257621, 271180, 352534, 368030, 396340, 449540, 478439, 503620, 515242, 705068, 736060, 881335, 956878, 1030484, 1288105, 1762670, 1913756, 2392195, 2576210, 3349073, 3525340, 4784390, 5152420, 6698146, 9568780, 13396292, 16745365, 33490730, 66981460]

約数ペア:

[(1, 66981460), (2, 33490730), (4, 16745365), (5, 13396292), (7, 9568780), (10, 6698146), (13, 5152420), (14, 4784390), (19, 3525340), (20, 3349073), (26, 2576210), (28, 2392195), (35, 1913756), (38, 1762670), (52, 1288105), (65, 1030484), (70, 956878), (76, 881335), (91, 736060), (95, 705068), (130, 515242), (133, 503620), (140, 478439), (149, 449540), (169, 396340), (182, 368030), (190, 352534), (247, 271180), (260, 257621), (266, 251810), (298, 224770), (338, 198170), (364, 184015), (380, 176267), (455, 147212), (494, 135590), (532, 125905), (596, 112385), (665, 100724), (676, 99085), (745, 89908), (845, 79268), (910, 73606), (988, 67795), (1043, 64220), (1183, 56620), (1235, 54236), (1330, 50362), (1490, 44954), (1690, 39634), (1729, 38740), (1820, 36803), (1937, 34580), (2086, 32110), (2366, 28310), (2470, 27118), (2660, 25181), (2831, 23660), (2980, 22477), (3211, 20860), (3380, 19817), (3458, 19370), (3874, 17290), (4172, 16055), (4732, 14155), (4940, 13559), (5215, 12844), (5662, 11830), (5915, 11324), (6422, 10430), (6916, 9685), (7748, 8645)]