21052655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{773}}^1$

素因数の和:1210

約数の個数: 16

約数和(自身を含む): 27306720

約数和(自身を除く): 6254065

約数列:

[1, 5, 13, 65, 419, 773, 2095, 3865, 5447, 10049, 27235, 50245, 323887, 1619435, 4210531, 21052655]

約数ペア:

[(1, 21052655), (5, 4210531), (13, 1619435), (65, 323887), (419, 50245), (773, 27235), (2095, 10049), (3865, 5447)]