638864086

素因数分解:

$2^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{290657}}^1$

素因数の和:290823

約数の個数: 16

約数和(自身を含む): 1102175136

約数和(自身を除く): 463311050

約数列:

[1, 2, 7, 14, 157, 314, 1099, 2198, 290657, 581314, 2034599, 4069198, 45633149, 91266298, 319432043, 638864086]

約数ペア:

[(1, 638864086), (2, 319432043), (7, 91266298), (14, 45633149), (157, 4069198), (314, 2034599), (1099, 581314), (2198, 290657)]