16642625

素因数分解:

$5^3\times {\mathrm{211}}^1\times {\mathrm{631}}^1$

素因数の和:857

約数の個数: 16

約数和(自身を含む): 20901504

約数和(自身を除く): 4258879

約数列:

[1, 5, 25, 125, 211, 631, 1055, 3155, 5275, 15775, 26375, 78875, 133141, 665705, 3328525, 16642625]

約数ペア:

[(1, 16642625), (5, 3328525), (25, 665705), (125, 133141), (211, 78875), (631, 26375), (1055, 15775), (3155, 5275)]