21469690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2749}}^1$

素因数の和:2838

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 21298310

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2749, 3905, 5498, 7810, 13745, 27490, 30239, 60478, 151195, 195179, 302390, 390358, 975895, 1951790, 2146969, 4293938, 10734845, 21469690]

約数ペア:

[(1, 21469690), (2, 10734845), (5, 4293938), (10, 2146969), (11, 1951790), (22, 975895), (55, 390358), (71, 302390), (110, 195179), (142, 151195), (355, 60478), (710, 30239), (781, 27490), (1562, 13745), (2749, 7810), (3905, 5498)]