28931380

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18311}}^1$

素因数の和:18399

約数の個数: 24

約数和(自身を含む): 61528320

約数和(自身を除く): 32596940

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 18311, 36622, 73244, 91555, 183110, 366220, 1446569, 2893138, 5786276, 7232845, 14465690, 28931380]

約数ペア:

[(1, 28931380), (2, 14465690), (4, 7232845), (5, 5786276), (10, 2893138), (20, 1446569), (79, 366220), (158, 183110), (316, 91555), (395, 73244), (790, 36622), (1580, 18311)]