19866645

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10267}}^1$

素因数の和:10321

約数の個数: 24

約数和(自身を含む): 35239776

約数和(自身を除く): 15373131

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10267, 30801, 51335, 92403, 154005, 441481, 462015, 1324443, 2207405, 3973329, 6622215, 19866645]

約数ペア:

[(1, 19866645), (3, 6622215), (5, 3973329), (9, 2207405), (15, 1324443), (43, 462015), (45, 441481), (129, 154005), (215, 92403), (387, 51335), (645, 30801), (1935, 10267)]