21043625

素因数分解:

$5^3\times {\mathrm{79}}^1\times {\mathrm{2131}}^1$

素因数の和:2225

約数の個数: 16

約数和(自身を含む): 26607360

約数和(自身を除く): 5563735

約数列:

[1, 5, 25, 79, 125, 395, 1975, 2131, 9875, 10655, 53275, 168349, 266375, 841745, 4208725, 21043625]

約数ペア:

[(1, 21043625), (5, 4208725), (25, 841745), (79, 266375), (125, 168349), (395, 53275), (1975, 10655), (2131, 9875)]