19860260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1117}}^1$

素因数の和:1260

約数の個数: 48

約数和(自身を含む): 48082944

約数和(自身を除く): 28222684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 254, 508, 635, 889, 1117, 1270, 1778, 2234, 2540, 3556, 4445, 4468, 5585, 7819, 8890, 11170, 15638, 17780, 22340, 31276, 39095, 78190, 141859, 156380, 283718, 567436, 709295, 993013, 1418590, 1986026, 2837180, 3972052, 4965065, 9930130, 19860260]

約数ペア:

[(1, 19860260), (2, 9930130), (4, 4965065), (5, 3972052), (7, 2837180), (10, 1986026), (14, 1418590), (20, 993013), (28, 709295), (35, 567436), (70, 283718), (127, 156380), (140, 141859), (254, 78190), (508, 39095), (635, 31276), (889, 22340), (1117, 17780), (1270, 15638), (1778, 11170), (2234, 8890), (2540, 7819), (3556, 5585), (4445, 4468)]