291136540

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^2\times {\mathrm{1427}}^1$

素因数の和:1638

約数の個数: 36

約数和(自身を含む): 617932728

約数和(自身を除く): 326796188

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 1427, 2020, 2854, 5708, 7135, 10201, 14270, 20402, 28540, 40804, 51005, 102010, 144127, 204020, 288254, 576508, 720635, 1441270, 2882540, 14556827, 29113654, 58227308, 72784135, 145568270, 291136540]

約数ペア:

[(1, 291136540), (2, 145568270), (4, 72784135), (5, 58227308), (10, 29113654), (20, 14556827), (101, 2882540), (202, 1441270), (404, 720635), (505, 576508), (1010, 288254), (1427, 204020), (2020, 144127), (2854, 102010), (5708, 51005), (7135, 40804), (10201, 28540), (14270, 20402)]