2157631

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:262

約数の個数: 16

約数和(自身を含む): 2603008

約数和(自身を除く): 445377

約数列:

[1, 7, 31, 61, 163, 217, 427, 1141, 1891, 5053, 9943, 13237, 35371, 69601, 308233, 2157631]

約数ペア:

[(1, 2157631), (7, 308233), (31, 69601), (61, 35371), (163, 13237), (217, 9943), (427, 5053), (1141, 1891)]