19705465

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1049}}^1$

素因数の和:1101

約数の個数: 24

約数和(自身を含む): 27077400

約数和(自身を除く): 7371935

約数列:

[1, 5, 13, 17, 65, 85, 221, 289, 1049, 1105, 1445, 3757, 5245, 13637, 17833, 18785, 68185, 89165, 231829, 303161, 1159145, 1515805, 3941093, 19705465]

約数ペア:

[(1, 19705465), (5, 3941093), (13, 1515805), (17, 1159145), (65, 303161), (85, 231829), (221, 89165), (289, 68185), (1049, 18785), (1105, 17833), (1445, 13637), (3757, 5245)]