639386881

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1\times {\mathrm{13399}}^1$

素因数の和:13824

約数の個数: 16

約数和(自身を含む): 775699200

約数和(自身を除く): 136312319

約数列:

[1, 7, 17, 119, 401, 2807, 6817, 13399, 47719, 93793, 227783, 1594481, 5372999, 37610993, 91340983, 639386881]

約数ペア:

[(1, 639386881), (7, 91340983), (17, 37610993), (119, 5372999), (401, 1594481), (2807, 227783), (6817, 93793), (13399, 47719)]