20513930

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1129}}^1$

素因数の和:1238

約数の個数: 32

約数和(自身を含む): 39052800

約数和(自身を除く): 18538870

約数列:

[1, 2, 5, 10, 23, 46, 79, 115, 158, 230, 395, 790, 1129, 1817, 2258, 3634, 5645, 9085, 11290, 18170, 25967, 51934, 89191, 129835, 178382, 259670, 445955, 891910, 2051393, 4102786, 10256965, 20513930]

約数ペア:

[(1, 20513930), (2, 10256965), (5, 4102786), (10, 2051393), (23, 891910), (46, 445955), (79, 259670), (115, 178382), (158, 129835), (230, 89191), (395, 51934), (790, 25967), (1129, 18170), (1817, 11290), (2258, 9085), (3634, 5645)]