19657665

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10159}}^1$

素因数の和:10213

約数の個数: 24

約数和(自身を含む): 34869120

約数和(自身を除く): 15211455

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10159, 30477, 50795, 91431, 152385, 436837, 457155, 1310511, 2184185, 3931533, 6552555, 19657665]

約数ペア:

[(1, 19657665), (3, 6552555), (5, 3931533), (9, 2184185), (15, 1310511), (43, 457155), (45, 436837), (129, 152385), (215, 91431), (387, 50795), (645, 30477), (1935, 10159)]