17949554020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12640531}}^1$

素因数の和:12640611

約数の個数: 24

約数和(自身を含む): 38224968768

約数和(自身を除く): 20275414748

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12640531, 25281062, 50562124, 63202655, 126405310, 252810620, 897477701, 1794955402, 3589910804, 4487388505, 8974777010, 17949554020]

約数ペア:

[(1, 17949554020), (2, 8974777010), (4, 4487388505), (5, 3589910804), (10, 1794955402), (20, 897477701), (71, 252810620), (142, 126405310), (284, 63202655), (355, 50562124), (710, 25281062), (1420, 12640531)]