20486595400

素因数分解:

$2^3\times 5^2\times {\mathrm{263}}^1\times {\mathrm{389479}}^1$

素因数の和:389758

約数の個数: 48

約数和(自身を含む): 47812564800

約数和(自身を除く): 27325969400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 263, 526, 1052, 1315, 2104, 2630, 5260, 6575, 10520, 13150, 26300, 52600, 389479, 778958, 1557916, 1947395, 3115832, 3894790, 7789580, 9736975, 15579160, 19473950, 38947900, 77895800, 102432977, 204865954, 409731908, 512164885, 819463816, 1024329770, 2048659540, 2560824425, 4097319080, 5121648850, 10243297700, 20486595400]

約数ペア:

[(1, 20486595400), (2, 10243297700), (4, 5121648850), (5, 4097319080), (8, 2560824425), (10, 2048659540), (20, 1024329770), (25, 819463816), (40, 512164885), (50, 409731908), (100, 204865954), (200, 102432977), (263, 77895800), (526, 38947900), (1052, 19473950), (1315, 15579160), (2104, 9736975), (2630, 7789580), (5260, 3894790), (6575, 3115832), (10520, 1947395), (13150, 1557916), (26300, 778958), (52600, 389479)]