20217743

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1867}}^1$

素因数の和:1911

約数の個数: 24

約数和(自身を含む): 26831952

約数和(自身を除く): 6614209

約数列:

[1, 7, 13, 17, 49, 91, 119, 221, 637, 833, 1547, 1867, 10829, 13069, 24271, 31739, 91483, 169897, 222173, 412607, 1189279, 1555211, 2888249, 20217743]

約数ペア:

[(1, 20217743), (7, 2888249), (13, 1555211), (17, 1189279), (49, 412607), (91, 222173), (119, 169897), (221, 91483), (637, 31739), (833, 24271), (1547, 13069), (1867, 10829)]