20457970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9257}}^1$

素因数の和:9294

約数の個数: 32

約数和(自身を含む): 41994288

約数和(自身を除く): 21536318

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9257, 18514, 46285, 92570, 120341, 157369, 240682, 314738, 601705, 786845, 1203410, 1573690, 2045797, 4091594, 10228985, 20457970]

約数ペア:

[(1, 20457970), (2, 10228985), (5, 4091594), (10, 2045797), (13, 1573690), (17, 1203410), (26, 786845), (34, 601705), (65, 314738), (85, 240682), (130, 157369), (170, 120341), (221, 92570), (442, 46285), (1105, 18514), (2210, 9257)]