18895480

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2081}}^1$

素因数の和:2319

約数の個数: 32

約数和(自身を含む): 42722640

約数和(自身を除く): 23827160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2081, 2270, 4162, 4540, 8324, 9080, 10405, 16648, 20810, 41620, 83240, 472387, 944774, 1889548, 2361935, 3779096, 4723870, 9447740, 18895480]

約数ペア:

[(1, 18895480), (2, 9447740), (4, 4723870), (5, 3779096), (8, 2361935), (10, 1889548), (20, 944774), (40, 472387), (227, 83240), (454, 41620), (908, 20810), (1135, 16648), (1816, 10405), (2081, 9080), (2270, 8324), (4162, 4540)]