19812725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{787}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 26382240

約数和(自身を除く): 6569515

約数列:

[1, 5, 19, 25, 53, 95, 265, 475, 787, 1007, 1325, 3935, 5035, 14953, 19675, 25175, 41711, 74765, 208555, 373825, 792509, 1042775, 3962545, 19812725]

約数ペア:

[(1, 19812725), (5, 3962545), (19, 1042775), (25, 792509), (53, 373825), (95, 208555), (265, 74765), (475, 41711), (787, 25175), (1007, 19675), (1325, 14953), (3935, 5035)]