19897625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:554

約数の個数: 32

約数和(自身を含む): 28080000

約数和(自身を除く): 8182375

約数列:

[1, 5, 11, 25, 29, 55, 125, 145, 275, 319, 499, 725, 1375, 1595, 2495, 3625, 5489, 7975, 12475, 14471, 27445, 39875, 62375, 72355, 137225, 159181, 361775, 686125, 795905, 1808875, 3979525, 19897625]

約数ペア:

[(1, 19897625), (5, 3979525), (11, 1808875), (25, 795905), (29, 686125), (55, 361775), (125, 159181), (145, 137225), (275, 72355), (319, 62375), (499, 39875), (725, 27445), (1375, 14471), (1595, 12475), (2495, 7975), (3625, 5489)]