20867495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12239}}^1$

素因数の和:12286

約数の個数: 16

約数和(自身を含む): 28200960

約数和(自身を除く): 7333465

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 12239, 61195, 134629, 379409, 673145, 1897045, 4173499, 20867495]

約数ペア:

[(1, 20867495), (5, 4173499), (11, 1897045), (31, 673145), (55, 379409), (155, 134629), (341, 61195), (1705, 12239)]