20817095

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18839}}^1$

素因数の和:18874

約数の個数: 16

約数和(自身を含む): 28486080

約数和(自身を除く): 7668985

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18839, 94195, 244907, 320263, 1224535, 1601315, 4163419, 20817095]

約数ペア:

[(1, 20817095), (5, 4163419), (13, 1601315), (17, 1224535), (65, 320263), (85, 244907), (221, 94195), (1105, 18839)]