9971995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{7883}}^1$

素因数の和:7922

約数の個数: 16

約数和(自身を含む): 13623552

約数和(自身を除く): 3651557

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 7883, 39415, 86713, 181309, 433565, 906545, 1994399, 9971995]

約数ペア:

[(1, 9971995), (5, 1994399), (11, 906545), (23, 433565), (55, 181309), (115, 86713), (253, 39415), (1265, 7883)]