228573640

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{8887}}^1$

素因数の和:9541

約数の個数: 32

約数和(自身を含む): 515148480

約数和(自身を除く): 286574840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 8887, 12860, 17774, 25720, 35548, 44435, 71096, 88870, 177740, 355480, 5714341, 11428682, 22857364, 28571705, 45714728, 57143410, 114286820, 228573640]

約数ペア:

[(1, 228573640), (2, 114286820), (4, 57143410), (5, 45714728), (8, 28571705), (10, 22857364), (20, 11428682), (40, 5714341), (643, 355480), (1286, 177740), (2572, 88870), (3215, 71096), (5144, 44435), (6430, 35548), (8887, 25720), (12860, 17774)]