28233680

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2539}}^1$

素因数の和:2691

約数の個数: 40

約数和(自身を含む): 66141600

約数和(自身を除く): 37907920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2539, 2780, 5078, 5560, 10156, 11120, 12695, 20312, 25390, 40624, 50780, 101560, 203120, 352921, 705842, 1411684, 1764605, 2823368, 3529210, 5646736, 7058420, 14116840, 28233680]

約数ペア:

[(1, 28233680), (2, 14116840), (4, 7058420), (5, 5646736), (8, 3529210), (10, 2823368), (16, 1764605), (20, 1411684), (40, 705842), (80, 352921), (139, 203120), (278, 101560), (556, 50780), (695, 40624), (1112, 25390), (1390, 20312), (2224, 12695), (2539, 11120), (2780, 10156), (5078, 5560)]