205748060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{2957}}^1$

素因数の和:3051

約数の個数: 72

約数和(自身を含む): 509864544

約数和(自身を除く): 304116484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1420, 1988, 2485, 2957, 3479, 4970, 5914, 6958, 9940, 11828, 13916, 14785, 17395, 20699, 29570, 34790, 41398, 59140, 69580, 82796, 103495, 144893, 206990, 209947, 289786, 413980, 419894, 579572, 724465, 839788, 1049735, 1448930, 1469629, 2099470, 2897860, 2939258, 4198940, 5878516, 7348145, 10287403, 14696290, 20574806, 29392580, 41149612, 51437015, 102874030, 205748060]

約数ペア:

[(1, 205748060), (2, 102874030), (4, 51437015), (5, 41149612), (7, 29392580), (10, 20574806), (14, 14696290), (20, 10287403), (28, 7348145), (35, 5878516), (49, 4198940), (70, 2939258), (71, 2897860), (98, 2099470), (140, 1469629), (142, 1448930), (196, 1049735), (245, 839788), (284, 724465), (355, 579572), (490, 419894), (497, 413980), (710, 289786), (980, 209947), (994, 206990), (1420, 144893), (1988, 103495), (2485, 82796), (2957, 69580), (3479, 59140), (4970, 41398), (5914, 34790), (6958, 29570), (9940, 20699), (11828, 17395), (13916, 14785)]