19986460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76871}}^1$

素因数の和:76893

約数の個数: 24

約数和(自身を含む): 45200736

約数和(自身を除く): 25214276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76871, 153742, 307484, 384355, 768710, 999323, 1537420, 1998646, 3997292, 4996615, 9993230, 19986460]

約数ペア:

[(1, 19986460), (2, 9993230), (4, 4996615), (5, 3997292), (10, 1998646), (13, 1537420), (20, 999323), (26, 768710), (52, 384355), (65, 307484), (130, 153742), (260, 76871)]