21202375

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{2389}}^1$

素因数の和:2475

約数の個数: 16

約数和(自身を含む): 26844480

約数和(自身を除く): 5642105

約数列:

[1, 5, 25, 71, 125, 355, 1775, 2389, 8875, 11945, 59725, 169619, 298625, 848095, 4240475, 21202375]

約数ペア:

[(1, 21202375), (5, 4240475), (25, 848095), (71, 298625), (125, 169619), (355, 59725), (1775, 11945), (2389, 8875)]