21399154

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{66457}}^1$

素因数の和:66489

約数の個数: 16

約数和(自身を含む): 38279808

約数和(自身を除く): 16880654

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 66457, 132914, 465199, 930398, 1528511, 3057022, 10699577, 21399154]

約数ペア:

[(1, 21399154), (2, 10699577), (7, 3057022), (14, 1528511), (23, 930398), (46, 465199), (161, 132914), (322, 66457)]