18920500

素因数分解:

$2^2\times 5^3\times {\mathrm{79}}^1\times {\mathrm{479}}^1$

素因数の和:577

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 23012300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 250, 316, 395, 479, 500, 790, 958, 1580, 1916, 1975, 2395, 3950, 4790, 7900, 9580, 9875, 11975, 19750, 23950, 37841, 39500, 47900, 59875, 75682, 119750, 151364, 189205, 239500, 378410, 756820, 946025, 1892050, 3784100, 4730125, 9460250, 18920500]

約数ペア:

[(1, 18920500), (2, 9460250), (4, 4730125), (5, 3784100), (10, 1892050), (20, 946025), (25, 756820), (50, 378410), (79, 239500), (100, 189205), (125, 151364), (158, 119750), (250, 75682), (316, 59875), (395, 47900), (479, 39500), (500, 37841), (790, 23950), (958, 19750), (1580, 11975), (1916, 9875), (1975, 9580), (2395, 7900), (3950, 4790)]