21123501

素因数分解:

$3^1\times 7^1\times {\mathrm{719}}^1\times {\mathrm{1399}}^1$

素因数の和:2128

約数の個数: 16

約数和(自身を含む): 32256000

約数和(自身を除く): 11132499

約数列:

[1, 3, 7, 21, 719, 1399, 2157, 4197, 5033, 9793, 15099, 29379, 1005881, 3017643, 7041167, 21123501]

約数ペア:

[(1, 21123501), (3, 7041167), (7, 3017643), (21, 1005881), (719, 29379), (1399, 15099), (2157, 9793), (4197, 5033)]