2012861825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 2812219560

約数和(自身を除く): 799357735

約数列:

[1, 5, 13, 25, 53, 65, 89, 101, 169, 265, 325, 445, 505, 689, 845, 1157, 1313, 1325, 2225, 2525, 3445, 4225, 4717, 5353, 5785, 6565, 8957, 8989, 15041, 17069, 17225, 23585, 26765, 28925, 32825, 44785, 44945, 61321, 69589, 75205, 85345, 116857, 117925, 133825, 223925, 224725, 306605, 347945, 376025, 426725, 476417, 584285, 797173, 904657, 1519141, 1533025, 1739725, 2382085, 2921425, 3985865, 4523285, 6193421, 7595705, 11910425, 19929325, 22616425, 30967105, 37978525, 80514473, 154835525, 402572365, 2012861825]

約数ペア:

[(1, 2012861825), (5, 402572365), (13, 154835525), (25, 80514473), (53, 37978525), (65, 30967105), (89, 22616425), (101, 19929325), (169, 11910425), (265, 7595705), (325, 6193421), (445, 4523285), (505, 3985865), (689, 2921425), (845, 2382085), (1157, 1739725), (1313, 1533025), (1325, 1519141), (2225, 904657), (2525, 797173), (3445, 584285), (4225, 476417), (4717, 426725), (5353, 376025), (5785, 347945), (6565, 306605), (8957, 224725), (8989, 223925), (15041, 133825), (17069, 117925), (17225, 116857), (23585, 85345), (26765, 75205), (28925, 69589), (32825, 61321), (44785, 44945)]