639203914

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{31957}}^1$

素因数の和:32169

約数の個数: 16

約数和(自身を含む): 979065288

約数和(自身を除く): 339861374

約数列:

[1, 2, 73, 137, 146, 274, 10001, 20002, 31957, 63914, 2332861, 4378109, 4665722, 8756218, 319601957, 639203914]

約数ペア:

[(1, 639203914), (2, 319601957), (73, 8756218), (137, 4665722), (146, 4378109), (274, 2332861), (10001, 63914), (20002, 31957)]