21002360

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2749}}^1$

素因数の和:2951

約数の個数: 32

約数和(自身を含む): 47520000

約数和(自身を除く): 26517640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2749, 3820, 5498, 7640, 10996, 13745, 21992, 27490, 54980, 109960, 525059, 1050118, 2100236, 2625295, 4200472, 5250590, 10501180, 21002360]

約数ペア:

[(1, 21002360), (2, 10501180), (4, 5250590), (5, 4200472), (8, 2625295), (10, 2100236), (20, 1050118), (40, 525059), (191, 109960), (382, 54980), (764, 27490), (955, 21992), (1528, 13745), (1910, 10996), (2749, 7640), (3820, 5498)]