20178847

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 23828112

約数和(自身を除く): 3649265

約数列:

[1, 13, 17, 41, 131, 221, 289, 533, 697, 1703, 2227, 3757, 5371, 9061, 11849, 28951, 37859, 69823, 91307, 154037, 492167, 1186991, 1552219, 20178847]

約数ペア:

[(1, 20178847), (13, 1552219), (17, 1186991), (41, 492167), (131, 154037), (221, 91307), (289, 69823), (533, 37859), (697, 28951), (1703, 11849), (2227, 9061), (3757, 5371)]