18617080

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1811}}^1$

素因数の和:2079

約数の個数: 32

約数和(自身を含む): 42074640

約数和(自身を除く): 23457560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1811, 2056, 2570, 3622, 5140, 7244, 9055, 10280, 14488, 18110, 36220, 72440, 465427, 930854, 1861708, 2327135, 3723416, 4654270, 9308540, 18617080]

約数ペア:

[(1, 18617080), (2, 9308540), (4, 4654270), (5, 3723416), (8, 2327135), (10, 1861708), (20, 930854), (40, 465427), (257, 72440), (514, 36220), (1028, 18110), (1285, 14488), (1811, 10280), (2056, 9055), (2570, 7244), (3622, 5140)]