79520540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1997}}^1$

素因数の和:2198

約数の個数: 48

約数和(自身を含む): 183272544

約数和(自身を除く): 103752004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 724, 905, 1810, 1991, 1997, 3620, 3982, 3994, 7964, 7988, 9955, 9985, 19910, 19970, 21967, 39820, 39940, 43934, 87868, 109835, 219670, 361457, 439340, 722914, 1445828, 1807285, 3614570, 3976027, 7229140, 7952054, 15904108, 19880135, 39760270, 79520540]

約数ペア:

[(1, 79520540), (2, 39760270), (4, 19880135), (5, 15904108), (10, 7952054), (11, 7229140), (20, 3976027), (22, 3614570), (44, 1807285), (55, 1445828), (110, 722914), (181, 439340), (220, 361457), (362, 219670), (724, 109835), (905, 87868), (1810, 43934), (1991, 39940), (1997, 39820), (3620, 21967), (3982, 19970), (3994, 19910), (7964, 9985), (7988, 9955)]