20505920

素因数分解:

$2^6\times 5^1\times {\mathrm{64081}}^1$

素因数の和:64098

約数の個数: 28

約数和(自身を含む): 48830484

約数和(自身を除く): 28324564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64081, 128162, 256324, 320405, 512648, 640810, 1025296, 1281620, 2050592, 2563240, 4101184, 5126480, 10252960, 20505920]

約数ペア:

[(1, 20505920), (2, 10252960), (4, 5126480), (5, 4101184), (8, 2563240), (10, 2050592), (16, 1281620), (20, 1025296), (32, 640810), (40, 512648), (64, 320405), (80, 256324), (160, 128162), (320, 64081)]