21054285

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{751}}^1$

素因数の和:858

約数の個数: 48

約数和(自身を含む): 42232320

約数和(自身を除く): 21178035

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 89, 105, 267, 315, 445, 623, 751, 801, 1335, 1869, 2253, 3115, 3755, 4005, 5257, 5607, 6759, 9345, 11265, 15771, 26285, 28035, 33795, 47313, 66839, 78855, 200517, 236565, 334195, 467873, 601551, 1002585, 1403619, 2339365, 3007755, 4210857, 7018095, 21054285]

約数ペア:

[(1, 21054285), (3, 7018095), (5, 4210857), (7, 3007755), (9, 2339365), (15, 1403619), (21, 1002585), (35, 601551), (45, 467873), (63, 334195), (89, 236565), (105, 200517), (267, 78855), (315, 66839), (445, 47313), (623, 33795), (751, 28035), (801, 26285), (1335, 15771), (1869, 11265), (2253, 9345), (3115, 6759), (3755, 5607), (4005, 5257)]