139909960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{81343}}^1$

素因数の和:81397

約数の個数: 32

約数和(自身を含む): 322122240

約数和(自身を除く): 182212280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 81343, 162686, 325372, 406715, 650744, 813430, 1626860, 3253720, 3497749, 6995498, 13990996, 17488745, 27981992, 34977490, 69954980, 139909960]

約数ペア:

[(1, 139909960), (2, 69954980), (4, 34977490), (5, 27981992), (8, 17488745), (10, 13990996), (20, 6995498), (40, 3497749), (43, 3253720), (86, 1626860), (172, 813430), (215, 650744), (344, 406715), (430, 325372), (860, 162686), (1720, 81343)]