21245820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{354097}}^1$

素因数の和:354109

約数の個数: 24

約数和(自身を含む): 59488464

約数和(自身を除く): 38242644

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 354097, 708194, 1062291, 1416388, 1770485, 2124582, 3540970, 4249164, 5311455, 7081940, 10622910, 21245820]

約数ペア:

[(1, 21245820), (2, 10622910), (3, 7081940), (4, 5311455), (5, 4249164), (6, 3540970), (10, 2124582), (12, 1770485), (15, 1416388), (20, 1062291), (30, 708194), (60, 354097)]