40397980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2857}}^1$

素因数の和:2974

約数の個数: 48

約数和(自身を含む): 97949376

約数和(自身を除く): 57551396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 2020, 2828, 2857, 3535, 5714, 7070, 11428, 14140, 14285, 19999, 28570, 39998, 57140, 79996, 99995, 199990, 288557, 399980, 577114, 1154228, 1442785, 2019899, 2885570, 4039798, 5771140, 8079596, 10099495, 20198990, 40397980]

約数ペア:

[(1, 40397980), (2, 20198990), (4, 10099495), (5, 8079596), (7, 5771140), (10, 4039798), (14, 2885570), (20, 2019899), (28, 1442785), (35, 1154228), (70, 577114), (101, 399980), (140, 288557), (202, 199990), (404, 99995), (505, 79996), (707, 57140), (1010, 39998), (1414, 28570), (2020, 19999), (2828, 14285), (2857, 14140), (3535, 11428), (5714, 7070)]