20818447

素因数分解:

${\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:474

約数の個数: 16

約数和(自身を含む): 23214240

約数和(自身を除く): 2395793

約数列:

[1, 13, 41, 139, 281, 533, 1807, 3653, 5699, 11521, 39059, 74087, 149773, 507767, 1601419, 20818447]

約数ペア:

[(1, 20818447), (13, 1601419), (41, 507767), (139, 149773), (281, 74087), (533, 39059), (1807, 11521), (3653, 5699)]