21059888

素因数分解:

$2^4\times {\mathrm{809}}^1\times {\mathrm{1627}}^1$

素因数の和:2444

約数の個数: 20

約数和(自身を含む): 40879080

約数和(自身を除く): 19819192

約数列:

[1, 2, 4, 8, 16, 809, 1618, 1627, 3236, 3254, 6472, 6508, 12944, 13016, 26032, 1316243, 2632486, 5264972, 10529944, 21059888]

約数ペア:

[(1, 21059888), (2, 10529944), (4, 5264972), (8, 2632486), (16, 1316243), (809, 26032), (1618, 13016), (1627, 12944), (3236, 6508), (3254, 6472)]