20083640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8231}}^1$

素因数の和:8303

約数の個数: 32

約数和(自身を含む): 45934560

約数和(自身を除く): 25850920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8231, 16462, 32924, 41155, 65848, 82310, 164620, 329240, 502091, 1004182, 2008364, 2510455, 4016728, 5020910, 10041820, 20083640]

約数ペア:

[(1, 20083640), (2, 10041820), (4, 5020910), (5, 4016728), (8, 2510455), (10, 2008364), (20, 1004182), (40, 502091), (61, 329240), (122, 164620), (244, 82310), (305, 65848), (488, 41155), (610, 32924), (1220, 16462), (2440, 8231)]