19802913

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 28899360

約数和(自身を除く): 9096447

約数列:

[1, 3, 13, 39, 139, 169, 281, 417, 507, 843, 1807, 3653, 5421, 10959, 23491, 39059, 47489, 70473, 117177, 142467, 507767, 1523301, 6600971, 19802913]

約数ペア:

[(1, 19802913), (3, 6600971), (13, 1523301), (39, 507767), (139, 142467), (169, 117177), (281, 70473), (417, 47489), (507, 39059), (843, 23491), (1807, 10959), (3653, 5421)]