211236431

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1\times {\mathrm{661}}^1$

素因数の和:1382

約数の個数: 16

約数和(自身を含む): 245564928

約数和(自身を除く): 34328497

約数列:

[1, 7, 71, 497, 643, 661, 4501, 4627, 45653, 46931, 319571, 328517, 425023, 2975161, 30176633, 211236431]

約数ペア:

[(1, 211236431), (7, 30176633), (71, 2975161), (497, 425023), (643, 328517), (661, 319571), (4501, 46931), (4627, 45653)]