12891205

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:644

約数の個数: 16

約数和(自身を含む): 15940800

約数和(自身を除く): 3049595

約数列:

[1, 5, 59, 89, 295, 445, 491, 2455, 5251, 26255, 28969, 43699, 144845, 218495, 2578241, 12891205]

約数ペア:

[(1, 12891205), (5, 2578241), (59, 218495), (89, 144845), (295, 43699), (445, 28969), (491, 26255), (2455, 5251)]