21052525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{307}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 28338464

約数和(自身を除く): 7285939

約数列:

[1, 5, 13, 25, 65, 211, 307, 325, 1055, 1535, 2743, 3991, 5275, 7675, 13715, 19955, 64777, 68575, 99775, 323885, 842101, 1619425, 4210505, 21052525]

約数ペア:

[(1, 21052525), (5, 4210505), (13, 1619425), (25, 842101), (65, 323885), (211, 99775), (307, 68575), (325, 64777), (1055, 19955), (1535, 13715), (2743, 7675), (3991, 5275)]