19418465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3967}}^1$

素因数の和:4072

約数の個数: 16

約数和(自身を含む): 25712640

約数和(自身を除く): 6294175

約数列:

[1, 5, 11, 55, 89, 445, 979, 3967, 4895, 19835, 43637, 218185, 353063, 1765315, 3883693, 19418465]

約数ペア:

[(1, 19418465), (5, 3883693), (11, 1765315), (55, 353063), (89, 218185), (445, 43637), (979, 19835), (3967, 4895)]