12221780

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1361}}^1$

素因数の和:1819

約数の個数: 24

約数和(自身を含む): 25741800

約数和(自身を除く): 13520020

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1361, 1796, 2245, 2722, 4490, 5444, 6805, 8980, 13610, 27220, 611089, 1222178, 2444356, 3055445, 6110890, 12221780]

約数ペア:

[(1, 12221780), (2, 6110890), (4, 3055445), (5, 2444356), (10, 1222178), (20, 611089), (449, 27220), (898, 13610), (1361, 8980), (1796, 6805), (2245, 5444), (2722, 4490)]