20543960

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2689}}^1$

素因数の和:2891

約数の個数: 32

約数和(自身を含む): 46483200

約数和(自身を除く): 25939240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2689, 3820, 5378, 7640, 10756, 13445, 21512, 26890, 53780, 107560, 513599, 1027198, 2054396, 2567995, 4108792, 5135990, 10271980, 20543960]

約数ペア:

[(1, 20543960), (2, 10271980), (4, 5135990), (5, 4108792), (8, 2567995), (10, 2054396), (20, 1027198), (40, 513599), (191, 107560), (382, 53780), (764, 26890), (955, 21512), (1528, 13445), (1910, 10756), (2689, 7640), (3820, 5378)]