7998140

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{3539}}^1$

素因数の和:3661

約数の個数: 24

約数和(自身を含む): 16949520

約数和(自身を除く): 8951380

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 3539, 7078, 14156, 17695, 35390, 70780, 399907, 799814, 1599628, 1999535, 3999070, 7998140]

約数ペア:

[(1, 7998140), (2, 3999070), (4, 1999535), (5, 1599628), (10, 799814), (20, 399907), (113, 70780), (226, 35390), (452, 17695), (565, 14156), (1130, 7078), (2260, 3539)]