61564040

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{3571}}^1$

素因数の和:4013

約数の個数: 32

約数和(自身を含む): 138879360

約数和(自身を除く): 77315320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 3571, 4310, 7142, 8620, 14284, 17240, 17855, 28568, 35710, 71420, 142840, 1539101, 3078202, 6156404, 7695505, 12312808, 15391010, 30782020, 61564040]

約数ペア:

[(1, 61564040), (2, 30782020), (4, 15391010), (5, 12312808), (8, 7695505), (10, 6156404), (20, 3078202), (40, 1539101), (431, 142840), (862, 71420), (1724, 35710), (2155, 28568), (3448, 17855), (3571, 17240), (4310, 14284), (7142, 8620)]