20308840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7151}}^1$

素因数の和:7233

約数の個数: 32

約数和(自身を含む): 46344960

約数和(自身を除く): 26036120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7151, 14302, 28604, 35755, 57208, 71510, 143020, 286040, 507721, 1015442, 2030884, 2538605, 4061768, 5077210, 10154420, 20308840]

約数ペア:

[(1, 20308840), (2, 10154420), (4, 5077210), (5, 4061768), (8, 2538605), (10, 2030884), (20, 1015442), (40, 507721), (71, 286040), (142, 143020), (284, 71510), (355, 57208), (568, 35755), (710, 28604), (1420, 14302), (2840, 7151)]