12780475

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:279

約数の個数: 24

約数和(自身を含む): 16516800

約数和(自身を除く): 3736325

約数列:

[1, 5, 25, 47, 73, 149, 235, 365, 745, 1175, 1825, 3431, 3725, 7003, 10877, 17155, 35015, 54385, 85775, 175075, 271925, 511219, 2556095, 12780475]

約数ペア:

[(1, 12780475), (5, 2556095), (25, 511219), (47, 271925), (73, 175075), (149, 85775), (235, 54385), (365, 35015), (745, 17155), (1175, 10877), (1825, 7003), (3431, 3725)]