18488720

素因数分解:

$2^4\times 5^1\times {\mathrm{231109}}^1$

素因数の和:231122

約数の個数: 20

約数和(自身を含む): 42986460

約数和(自身を除く): 24497740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 231109, 462218, 924436, 1155545, 1848872, 2311090, 3697744, 4622180, 9244360, 18488720]

約数ペア:

[(1, 18488720), (2, 9244360), (4, 4622180), (5, 3697744), (8, 2311090), (10, 1848872), (16, 1155545), (20, 924436), (40, 462218), (80, 231109)]