19857513

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{491}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 30748032

約数和(自身を除く): 10890519

約数列:

[1, 3, 13, 17, 39, 51, 61, 183, 221, 491, 663, 793, 1037, 1473, 2379, 3111, 6383, 8347, 13481, 19149, 25041, 29951, 40443, 89853, 108511, 325533, 389363, 509167, 1168089, 1527501, 6619171, 19857513]

約数ペア:

[(1, 19857513), (3, 6619171), (13, 1527501), (17, 1168089), (39, 509167), (51, 389363), (61, 325533), (183, 108511), (221, 89853), (491, 40443), (663, 29951), (793, 25041), (1037, 19149), (1473, 13481), (2379, 8347), (3111, 6383)]