28709401

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:504

約数の個数: 16

約数和(自身を含む): 33454080

約数和(自身を除く): 4744679

約数列:

[1, 7, 109, 191, 197, 763, 1337, 1379, 20819, 21473, 37627, 145733, 150311, 263389, 4101343, 28709401]

約数ペア:

[(1, 28709401), (7, 4101343), (109, 263389), (191, 150311), (197, 145733), (763, 37627), (1337, 21473), (1379, 20819)]