209900900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1103}}^1$

素因数の和:1301

約数の個数: 72

約数和(自身を含む): 500217984

約数和(自身を除く): 290317084

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 173, 220, 275, 346, 550, 692, 865, 1100, 1103, 1730, 1903, 2206, 3460, 3806, 4325, 4412, 5515, 7612, 8650, 9515, 11030, 12133, 17300, 19030, 22060, 24266, 27575, 38060, 47575, 48532, 55150, 60665, 95150, 110300, 121330, 190300, 190819, 242660, 303325, 381638, 606650, 763276, 954095, 1213300, 1908190, 2099009, 3816380, 4198018, 4770475, 8396036, 9540950, 10495045, 19081900, 20990090, 41980180, 52475225, 104950450, 209900900]

約数ペア:

[(1, 209900900), (2, 104950450), (4, 52475225), (5, 41980180), (10, 20990090), (11, 19081900), (20, 10495045), (22, 9540950), (25, 8396036), (44, 4770475), (50, 4198018), (55, 3816380), (100, 2099009), (110, 1908190), (173, 1213300), (220, 954095), (275, 763276), (346, 606650), (550, 381638), (692, 303325), (865, 242660), (1100, 190819), (1103, 190300), (1730, 121330), (1903, 110300), (2206, 95150), (3460, 60665), (3806, 55150), (4325, 48532), (4412, 47575), (5515, 38060), (7612, 27575), (8650, 24266), (9515, 22060), (11030, 19030), (12133, 17300)]