21467780

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2423}}^1$

素因数の和:2875

約数の個数: 24

約数和(自身を含む): 45202752

約数和(自身を除く): 23734972

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 2423, 4430, 4846, 8860, 9692, 12115, 24230, 48460, 1073389, 2146778, 4293556, 5366945, 10733890, 21467780]

約数ペア:

[(1, 21467780), (2, 10733890), (4, 5366945), (5, 4293556), (10, 2146778), (20, 1073389), (443, 48460), (886, 24230), (1772, 12115), (2215, 9692), (2423, 8860), (4430, 4846)]