21739250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6689}}^1$

素因数の和:6719

約数の個数: 32

約数和(自身を含む): 43832880

約数和(自身を除く): 22093630

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6689, 13378, 33445, 66890, 86957, 167225, 173914, 334450, 434785, 836125, 869570, 1672250, 2173925, 4347850, 10869625, 21739250]

約数ペア:

[(1, 21739250), (2, 10869625), (5, 4347850), (10, 2173925), (13, 1672250), (25, 869570), (26, 836125), (50, 434785), (65, 334450), (125, 173914), (130, 167225), (250, 86957), (325, 66890), (650, 33445), (1625, 13378), (3250, 6689)]