21163181

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:221

約数の個数: 24

約数和(自身を含む): 24962784

約数和(自身を除く): 3799603

約数列:

[1, 13, 17, 43, 131, 221, 289, 559, 731, 1703, 2227, 3757, 5633, 9503, 12427, 28951, 37859, 73229, 95761, 161551, 492167, 1244893, 1627937, 21163181]

約数ペア:

[(1, 21163181), (13, 1627937), (17, 1244893), (43, 492167), (131, 161551), (221, 95761), (289, 73229), (559, 37859), (731, 28951), (1703, 12427), (2227, 9503), (3757, 5633)]