640933167

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1795331}}^1$

素因数の和:1795358

約数の個数: 16

約数和(自身を含む): 1034111232

約数和(自身を除く): 393178065

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 1795331, 5385993, 12567317, 30520627, 37701951, 91561881, 213644389, 640933167]

約数ペア:

[(1, 640933167), (3, 213644389), (7, 91561881), (17, 37701951), (21, 30520627), (51, 12567317), (119, 5385993), (357, 1795331)]