3978140

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{449}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 8391600

約数和(自身を除く): 4413460

約数列:

[1, 2, 4, 5, 10, 20, 443, 449, 886, 898, 1772, 1796, 2215, 2245, 4430, 4490, 8860, 8980, 198907, 397814, 795628, 994535, 1989070, 3978140]

約数ペア:

[(1, 3978140), (2, 1989070), (4, 994535), (5, 795628), (10, 397814), (20, 198907), (443, 8980), (449, 8860), (886, 4490), (898, 4430), (1772, 2245), (1796, 2215)]