18146320

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2081}}^1$

素因数の和:2203

約数の個数: 40

約数和(自身を含む): 42597720

約数和(自身を除く): 24451400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2081, 2180, 4162, 4360, 8324, 8720, 10405, 16648, 20810, 33296, 41620, 83240, 166480, 226829, 453658, 907316, 1134145, 1814632, 2268290, 3629264, 4536580, 9073160, 18146320]

約数ペア:

[(1, 18146320), (2, 9073160), (4, 4536580), (5, 3629264), (8, 2268290), (10, 1814632), (16, 1134145), (20, 907316), (40, 453658), (80, 226829), (109, 166480), (218, 83240), (436, 41620), (545, 33296), (872, 20810), (1090, 16648), (1744, 10405), (2081, 8720), (2180, 8324), (4162, 4360)]