21258873

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10190727

約数列:

[1, 3, 9, 83, 149, 191, 249, 447, 573, 747, 1341, 1719, 12367, 15853, 28459, 37101, 47559, 85377, 111303, 142677, 256131, 2362097, 7086291, 21258873]

約数ペア:

[(1, 21258873), (3, 7086291), (9, 2362097), (83, 256131), (149, 142677), (191, 111303), (249, 85377), (447, 47559), (573, 37101), (747, 28459), (1341, 15853), (1719, 12367)]