21031687765

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20126017}}^1$

素因数の和:20126052

約数の個数: 16

約数和(自身を含む): 28981465920

約数和(自身を除く): 7949778155

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20126017, 100630085, 221386187, 382394323, 1106930935, 1911971615, 4206337553, 21031687765]

約数ペア:

[(1, 21031687765), (5, 4206337553), (11, 1911971615), (19, 1106930935), (55, 382394323), (95, 221386187), (209, 100630085), (1045, 20126017)]