20720161

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1439}}^1$

素因数の和:1485

約数の個数: 24

約数和(自身を含む): 27578880

約数和(自身を除く): 6858719

約数列:

[1, 7, 11, 17, 77, 119, 121, 187, 847, 1309, 1439, 2057, 10073, 14399, 15829, 24463, 110803, 171241, 174119, 269093, 1218833, 1883651, 2960023, 20720161]

約数ペア:

[(1, 20720161), (7, 2960023), (11, 1883651), (17, 1218833), (77, 269093), (119, 174119), (121, 171241), (187, 110803), (847, 24463), (1309, 15829), (1439, 14399), (2057, 10073)]