20847820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{148913}}^1$

素因数の和:148929

約数の個数: 24

約数和(自身を含む): 50035104

約数和(自身を除く): 29187284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 148913, 297826, 595652, 744565, 1042391, 1489130, 2084782, 2978260, 4169564, 5211955, 10423910, 20847820]

約数ペア:

[(1, 20847820), (2, 10423910), (4, 5211955), (5, 4169564), (7, 2978260), (10, 2084782), (14, 1489130), (20, 1042391), (28, 744565), (35, 595652), (70, 297826), (140, 148913)]