178782020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{4397}}^1$

素因数の和:4532

約数の個数: 48

約数和(自身を含む): 398986560

約数和(自身を除く): 220204540

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 107, 190, 214, 380, 428, 535, 1070, 2033, 2140, 4066, 4397, 8132, 8794, 10165, 17588, 20330, 21985, 40660, 43970, 83543, 87940, 167086, 334172, 417715, 470479, 835430, 940958, 1670860, 1881916, 2352395, 4704790, 8939101, 9409580, 17878202, 35756404, 44695505, 89391010, 178782020]

約数ペア:

[(1, 178782020), (2, 89391010), (4, 44695505), (5, 35756404), (10, 17878202), (19, 9409580), (20, 8939101), (38, 4704790), (76, 2352395), (95, 1881916), (107, 1670860), (190, 940958), (214, 835430), (380, 470479), (428, 417715), (535, 334172), (1070, 167086), (2033, 87940), (2140, 83543), (4066, 43970), (4397, 40660), (8132, 21985), (8794, 20330), (10165, 17588)]