21613930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3137}}^1$

素因数の和:3210

約数の個数: 32

約数和(自身を含む): 42701904

約数和(自身を除く): 21087974

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3137, 3445, 6274, 6890, 15685, 31370, 40781, 81562, 166261, 203905, 332522, 407810, 831305, 1662610, 2161393, 4322786, 10806965, 21613930]

約数ペア:

[(1, 21613930), (2, 10806965), (5, 4322786), (10, 2161393), (13, 1662610), (26, 831305), (53, 407810), (65, 332522), (106, 203905), (130, 166261), (265, 81562), (530, 40781), (689, 31370), (1378, 15685), (3137, 6890), (3445, 6274)]