28081963

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{733}}^1$

素因数の和:1174

約数の個数: 16

約数和(自身を含む): 34691776

約数和(自身を除く): 6609813

約数列:

[1, 7, 13, 91, 421, 733, 2947, 5131, 5473, 9529, 38311, 66703, 308593, 2160151, 4011709, 28081963]

約数ペア:

[(1, 28081963), (7, 4011709), (13, 2160151), (91, 308593), (421, 66703), (733, 38311), (2947, 9529), (5131, 5473)]