20778820153

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{1381}}^1\times {\mathrm{165343}}^1$

素因数の和:166744

約数の個数: 16

約数和(自身を含む): 25592605696

約数和(自身を除く): 4813785543

約数列:

[1, 7, 13, 91, 1381, 9667, 17953, 125671, 165343, 1157401, 2149459, 15046213, 228338683, 1598370781, 2968402879, 20778820153]

約数ペア:

[(1, 20778820153), (7, 2968402879), (13, 1598370781), (91, 228338683), (1381, 15046213), (9667, 2149459), (17953, 1157401), (125671, 165343)]