128217860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{206803}}^1$

素因数の和:206843

約数の個数: 24

約数和(自身を含む): 277944576

約数和(自身を除く): 149726716

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 206803, 413606, 827212, 1034015, 2068030, 4136060, 6410893, 12821786, 25643572, 32054465, 64108930, 128217860]

約数ペア:

[(1, 128217860), (2, 64108930), (4, 32054465), (5, 25643572), (10, 12821786), (20, 6410893), (31, 4136060), (62, 2068030), (124, 1034015), (155, 827212), (310, 413606), (620, 206803)]