201408620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205519}}^1$

素因数の和:205542

約数の個数: 36

約数和(自身を含む): 492014880

約数和(自身を除く): 290606260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205519, 411038, 822076, 1027595, 1438633, 2055190, 2877266, 4110380, 5754532, 7193165, 10070431, 14386330, 20140862, 28772660, 40281724, 50352155, 100704310, 201408620]

約数ペア:

[(1, 201408620), (2, 100704310), (4, 50352155), (5, 40281724), (7, 28772660), (10, 20140862), (14, 14386330), (20, 10070431), (28, 7193165), (35, 5754532), (49, 4110380), (70, 2877266), (98, 2055190), (140, 1438633), (196, 1027595), (245, 822076), (490, 411038), (980, 205519)]