20177840

素因数分解:

$2^4\times 5^1\times {\mathrm{252223}}^1$

素因数の和:252236

約数の個数: 20

約数和(自身を含む): 46913664

約数和(自身を除く): 26735824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252223, 504446, 1008892, 1261115, 2017784, 2522230, 4035568, 5044460, 10088920, 20177840]

約数ペア:

[(1, 20177840), (2, 10088920), (4, 5044460), (5, 4035568), (8, 2522230), (10, 2017784), (16, 1261115), (20, 1008892), (40, 504446), (80, 252223)]