21000620176

素因数分解:

$2^4\times {\mathrm{5309}}^1\times {\mathrm{247229}}^1$

素因数の和:252546

約数の個数: 20

約数和(自身を含む): 40696530300

約数和(自身を除く): 19695910124

約数列:

[1, 2, 4, 8, 16, 5309, 10618, 21236, 42472, 84944, 247229, 494458, 988916, 1977832, 3955664, 1312538761, 2625077522, 5250155044, 10500310088, 21000620176]

約数ペア:

[(1, 21000620176), (2, 10500310088), (4, 5250155044), (8, 2625077522), (16, 1312538761), (5309, 3955664), (10618, 1977832), (21236, 988916), (42472, 494458), (84944, 247229)]