20827480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12109}}^1$

素因数の和:12163

約数の個数: 32

約数和(自身を含む): 47955600

約数和(自身を除く): 27128120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12109, 24218, 48436, 60545, 96872, 121090, 242180, 484360, 520687, 1041374, 2082748, 2603435, 4165496, 5206870, 10413740, 20827480]

約数ペア:

[(1, 20827480), (2, 10413740), (4, 5206870), (5, 4165496), (8, 2603435), (10, 2082748), (20, 1041374), (40, 520687), (43, 484360), (86, 242180), (172, 121090), (215, 96872), (344, 60545), (430, 48436), (860, 24218), (1720, 12109)]