20145455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{2333}}^1$

素因数の和:2506

約数の個数: 16

約数和(自身を含む): 26551584

約数和(自身を除く): 6406129

約数列:

[1, 5, 11, 55, 157, 785, 1727, 2333, 8635, 11665, 25663, 128315, 366281, 1831405, 4029091, 20145455]

約数ペア:

[(1, 20145455), (5, 4029091), (11, 1831405), (55, 366281), (157, 128315), (785, 25663), (1727, 11665), (2333, 8635)]