20771530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6947}}^1$

素因数の和:6990

約数の個数: 32

約数和(自身を含む): 42021504

約数和(自身を除く): 21249974

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 6947, 13894, 34735, 69470, 90311, 159781, 180622, 319562, 451555, 798905, 903110, 1597810, 2077153, 4154306, 10385765, 20771530]

約数ペア:

[(1, 20771530), (2, 10385765), (5, 4154306), (10, 2077153), (13, 1597810), (23, 903110), (26, 798905), (46, 451555), (65, 319562), (115, 180622), (130, 159781), (230, 90311), (299, 69470), (598, 34735), (1495, 13894), (2990, 6947)]