18866480

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2087}}^1$

素因数の和:2213

約数の個数: 40

約数和(自身を含む): 44273952

約数和(自身を除く): 25407472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2087, 2260, 4174, 4520, 8348, 9040, 10435, 16696, 20870, 33392, 41740, 83480, 166960, 235831, 471662, 943324, 1179155, 1886648, 2358310, 3773296, 4716620, 9433240, 18866480]

約数ペア:

[(1, 18866480), (2, 9433240), (4, 4716620), (5, 3773296), (8, 2358310), (10, 1886648), (16, 1179155), (20, 943324), (40, 471662), (80, 235831), (113, 166960), (226, 83480), (452, 41740), (565, 33392), (904, 20870), (1130, 16696), (1808, 10435), (2087, 9040), (2260, 8348), (4174, 4520)]