12778540

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1423}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 26913600

約数和(自身を除く): 14135060

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1423, 1796, 2245, 2846, 4490, 5692, 7115, 8980, 14230, 28460, 638927, 1277854, 2555708, 3194635, 6389270, 12778540]

約数ペア:

[(1, 12778540), (2, 6389270), (4, 3194635), (5, 2555708), (10, 1277854), (20, 638927), (449, 28460), (898, 14230), (1423, 8980), (1796, 7115), (2245, 5692), (2846, 4490)]