21758540

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2423}}^1$

素因数の和:2881

約数の個数: 24

約数和(自身を含む): 45813600

約数和(自身を除く): 24055060

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 2423, 4490, 4846, 8980, 9692, 12115, 24230, 48460, 1087927, 2175854, 4351708, 5439635, 10879270, 21758540]

約数ペア:

[(1, 21758540), (2, 10879270), (4, 5439635), (5, 4351708), (10, 2175854), (20, 1087927), (449, 48460), (898, 24230), (1796, 12115), (2245, 9692), (2423, 8980), (4490, 4846)]