81276440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{1033}}^1$

素因数の和:1332

約数の個数: 64

約数和(自身を含む): 209943360

約数和(自身を除く): 128666920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281, 562, 1033, 1124, 1405, 1967, 2066, 2248, 2810, 3934, 4132, 5165, 5620, 7231, 7868, 8264, 9835, 10330, 11240, 14462, 15736, 19670, 20660, 28924, 36155, 39340, 41320, 57848, 72310, 78680, 144620, 289240, 290273, 580546, 1161092, 1451365, 2031911, 2322184, 2902730, 4063822, 5805460, 8127644, 10159555, 11610920, 16255288, 20319110, 40638220, 81276440]

約数ペア:

[(1, 81276440), (2, 40638220), (4, 20319110), (5, 16255288), (7, 11610920), (8, 10159555), (10, 8127644), (14, 5805460), (20, 4063822), (28, 2902730), (35, 2322184), (40, 2031911), (56, 1451365), (70, 1161092), (140, 580546), (280, 290273), (281, 289240), (562, 144620), (1033, 78680), (1124, 72310), (1405, 57848), (1967, 41320), (2066, 39340), (2248, 36155), (2810, 28924), (3934, 20660), (4132, 19670), (5165, 15736), (5620, 14462), (7231, 11240), (7868, 10330), (8264, 9835)]