20100440

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4447}}^1$

素因数の和:4571

約数の個数: 32

約数和(自身を含む): 45636480

約数和(自身を除く): 25536040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4447, 4520, 8894, 17788, 22235, 35576, 44470, 88940, 177880, 502511, 1005022, 2010044, 2512555, 4020088, 5025110, 10050220, 20100440]

約数ペア:

[(1, 20100440), (2, 10050220), (4, 5025110), (5, 4020088), (8, 2512555), (10, 2010044), (20, 1005022), (40, 502511), (113, 177880), (226, 88940), (452, 44470), (565, 35576), (904, 22235), (1130, 17788), (2260, 8894), (4447, 4520)]