31180985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^2$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 42866496

約数和(自身を除く): 11685511

約数列:

[1, 5, 11, 23, 55, 115, 157, 253, 785, 1265, 1727, 3611, 8635, 18055, 24649, 39721, 123245, 198605, 271139, 566927, 1355695, 2834635, 6236197, 31180985]

約数ペア:

[(1, 31180985), (5, 6236197), (11, 2834635), (23, 1355695), (55, 566927), (115, 271139), (157, 198605), (253, 123245), (785, 39721), (1265, 24649), (1727, 18055), (3611, 8635)]