20077540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2351}}^1$

素因数の和:2428

約数の個数: 48

約数和(自身を含む): 48996864

約数和(自身を除く): 28919324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2351, 4270, 4702, 8540, 9404, 11755, 16457, 23510, 32914, 47020, 65828, 82285, 143411, 164570, 286822, 329140, 573644, 717055, 1003877, 1434110, 2007754, 2868220, 4015508, 5019385, 10038770, 20077540]

約数ペア:

[(1, 20077540), (2, 10038770), (4, 5019385), (5, 4015508), (7, 2868220), (10, 2007754), (14, 1434110), (20, 1003877), (28, 717055), (35, 573644), (61, 329140), (70, 286822), (122, 164570), (140, 143411), (244, 82285), (305, 65828), (427, 47020), (610, 32914), (854, 23510), (1220, 16457), (1708, 11755), (2135, 9404), (2351, 8540), (4270, 4702)]