20207225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{311}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 26462592

約数和(自身を除く): 6255367

約数列:

[1, 5, 23, 25, 113, 115, 311, 565, 575, 1555, 2599, 2825, 7153, 7775, 12995, 35143, 35765, 64975, 175715, 178825, 808289, 878575, 4041445, 20207225]

約数ペア:

[(1, 20207225), (5, 4041445), (23, 878575), (25, 808289), (113, 178825), (115, 175715), (311, 64975), (565, 35765), (575, 35143), (1555, 12995), (2599, 7775), (2825, 7153)]