18128840

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9643}}^1$

素因数の和:9701

約数の個数: 32

約数和(自身を含む): 41662080

約数和(自身を除く): 23533240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 9643, 19286, 38572, 48215, 77144, 96430, 192860, 385720, 453221, 906442, 1812884, 2266105, 3625768, 4532210, 9064420, 18128840]

約数ペア:

[(1, 18128840), (2, 9064420), (4, 4532210), (5, 3625768), (8, 2266105), (10, 1812884), (20, 906442), (40, 453221), (47, 385720), (94, 192860), (188, 96430), (235, 77144), (376, 48215), (470, 38572), (940, 19286), (1880, 9643)]