21172520

素因数分解:

$2^3\times 5^1\times {\mathrm{529313}}^1$

素因数の和:529324

約数の個数: 16

約数和(自身を含む): 47638260

約数和(自身を除く): 26465740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529313, 1058626, 2117252, 2646565, 4234504, 5293130, 10586260, 21172520]

約数ペア:

[(1, 21172520), (2, 10586260), (4, 5293130), (5, 4234504), (8, 2646565), (10, 2117252), (20, 1058626), (40, 529313)]