21861190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{499}}^1$

素因数の和:856

約数の個数: 32

約数和(自身を含む): 42588000

約数和(自身を除く): 20726810

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 337, 499, 674, 998, 1685, 2495, 3370, 4381, 4990, 6487, 8762, 12974, 21905, 32435, 43810, 64870, 168163, 336326, 840815, 1681630, 2186119, 4372238, 10930595, 21861190]

約数ペア:

[(1, 21861190), (2, 10930595), (5, 4372238), (10, 2186119), (13, 1681630), (26, 840815), (65, 336326), (130, 168163), (337, 64870), (499, 43810), (674, 32435), (998, 21905), (1685, 12974), (2495, 8762), (3370, 6487), (4381, 4990)]