21113380

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2383}}^1$

素因数の和:2835

約数の個数: 24

約数和(自身を含む): 44456832

約数和(自身を除く): 23343452

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 2383, 4430, 4766, 8860, 9532, 11915, 23830, 47660, 1055669, 2111338, 4222676, 5278345, 10556690, 21113380]

約数ペア:

[(1, 21113380), (2, 10556690), (4, 5278345), (5, 4222676), (10, 2111338), (20, 1055669), (443, 47660), (886, 23830), (1772, 11915), (2215, 9532), (2383, 8860), (4430, 4766)]