21172040

素因数分解:

$2^3\times 5^1\times {\mathrm{529301}}^1$

素因数の和:529312

約数の個数: 16

約数和(自身を含む): 47637180

約数和(自身を除く): 26465140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529301, 1058602, 2117204, 2646505, 4234408, 5293010, 10586020, 21172040]

約数ペア:

[(1, 21172040), (2, 10586020), (4, 5293010), (5, 4234408), (8, 2646505), (10, 2117204), (20, 1058602), (40, 529301)]