20540575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{661}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 28074096

約数和(自身を除く): 7533521

約数列:

[1, 5, 11, 25, 55, 113, 275, 565, 661, 1243, 2825, 3305, 6215, 7271, 16525, 31075, 36355, 74693, 181775, 373465, 821623, 1867325, 4108115, 20540575]

約数ペア:

[(1, 20540575), (5, 4108115), (11, 1867325), (25, 821623), (55, 373465), (113, 181775), (275, 74693), (565, 36355), (661, 31075), (1243, 16525), (2825, 7271), (3305, 6215)]