21091844

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{823}}^1$

素因数の和:1019

約数の個数: 24

約数和(自身を含む): 38068800

約数和(自身を除く): 16976956

約数列:

[1, 2, 4, 43, 86, 149, 172, 298, 596, 823, 1646, 3292, 6407, 12814, 25628, 35389, 70778, 122627, 141556, 245254, 490508, 5272961, 10545922, 21091844]

約数ペア:

[(1, 21091844), (2, 10545922), (4, 5272961), (43, 490508), (86, 245254), (149, 141556), (172, 122627), (298, 70778), (596, 35389), (823, 25628), (1646, 12814), (3292, 6407)]