21179240

素因数分解:

$2^3\times 5^1\times {\mathrm{601}}^1\times {\mathrm{881}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 47786760

約数和(自身を除く): 26607520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 601, 881, 1202, 1762, 2404, 3005, 3524, 4405, 4808, 6010, 7048, 8810, 12020, 17620, 24040, 35240, 529481, 1058962, 2117924, 2647405, 4235848, 5294810, 10589620, 21179240]

約数ペア:

[(1, 21179240), (2, 10589620), (4, 5294810), (5, 4235848), (8, 2647405), (10, 2117924), (20, 1058962), (40, 529481), (601, 35240), (881, 24040), (1202, 17620), (1762, 12020), (2404, 8810), (3005, 7048), (3524, 6010), (4405, 4808)]