15680375

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:236

約数の個数: 32

約数和(自身を含む): 21295872

約数和(自身を除く): 5615497

約数列:

[1, 5, 17, 25, 47, 85, 125, 157, 235, 425, 785, 799, 1175, 2125, 2669, 3925, 3995, 5875, 7379, 13345, 19625, 19975, 36895, 66725, 99875, 125443, 184475, 333625, 627215, 922375, 3136075, 15680375]

約数ペア:

[(1, 15680375), (5, 3136075), (17, 922375), (25, 627215), (47, 333625), (85, 184475), (125, 125443), (157, 99875), (235, 66725), (425, 36895), (785, 19975), (799, 19625), (1175, 13345), (2125, 7379), (2669, 5875), (3925, 3995)]