31781239

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1811}}^1$

素因数の和:1950

約数の個数: 16

約数和(自身を含む): 38269440

約数和(自身を除く): 6488201

約数列:

[1, 7, 23, 109, 161, 763, 1811, 2507, 12677, 17549, 41653, 197399, 291571, 1381793, 4540177, 31781239]

約数ペア:

[(1, 31781239), (7, 4540177), (23, 1381793), (109, 291571), (161, 197399), (763, 41653), (1811, 17549), (2507, 12677)]