18261640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5779}}^1$

素因数の和:5869

約数の個数: 32

約数和(自身を含む): 41616000

約数和(自身を除く): 23354360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 5779, 11558, 23116, 28895, 46232, 57790, 115580, 231160, 456541, 913082, 1826164, 2282705, 3652328, 4565410, 9130820, 18261640]

約数ペア:

[(1, 18261640), (2, 9130820), (4, 4565410), (5, 3652328), (8, 2282705), (10, 1826164), (20, 913082), (40, 456541), (79, 231160), (158, 115580), (316, 57790), (395, 46232), (632, 28895), (790, 23116), (1580, 11558), (3160, 5779)]