20325640

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1889}}^1$

素因数の和:2169

約数の個数: 32

約数和(自身を含む): 45927000

約数和(自身を除く): 25601360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1889, 2152, 2690, 3778, 5380, 7556, 9445, 10760, 15112, 18890, 37780, 75560, 508141, 1016282, 2032564, 2540705, 4065128, 5081410, 10162820, 20325640]

約数ペア:

[(1, 20325640), (2, 10162820), (4, 5081410), (5, 4065128), (8, 2540705), (10, 2032564), (20, 1016282), (40, 508141), (269, 75560), (538, 37780), (1076, 18890), (1345, 15112), (1889, 10760), (2152, 9445), (2690, 7556), (3778, 5380)]