20570888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1423}}^1$

素因数の和:1581

約数の個数: 32

約数和(自身を含む): 41865600

約数和(自身を除く): 21294712

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 139, 278, 556, 1112, 1423, 1807, 2846, 3614, 5692, 7228, 11384, 14456, 18499, 36998, 73996, 147992, 197797, 395594, 791188, 1582376, 2571361, 5142722, 10285444, 20570888]

約数ペア:

[(1, 20570888), (2, 10285444), (4, 5142722), (8, 2571361), (13, 1582376), (26, 791188), (52, 395594), (104, 197797), (139, 147992), (278, 73996), (556, 36998), (1112, 18499), (1423, 14456), (1807, 11384), (2846, 7228), (3614, 5692)]