128342788

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^2\times {\mathrm{67}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 273924672

約数和(自身を除く): 145581884

約数列:

[1, 2, 4, 7, 14, 28, 37, 43, 67, 74, 86, 134, 148, 172, 259, 268, 301, 469, 518, 602, 938, 1036, 1204, 1591, 1849, 1876, 2479, 2881, 3182, 3698, 4958, 5762, 6364, 7396, 9916, 11137, 11524, 12943, 17353, 20167, 22274, 25886, 34706, 40334, 44548, 51772, 68413, 69412, 80668, 106597, 123883, 136826, 213194, 247766, 273652, 426388, 478891, 495532, 746179, 867181, 957782, 1492358, 1734362, 1915564, 2984716, 3468724, 4583671, 9167342, 18334684, 32085697, 64171394, 128342788]

約数ペア:

[(1, 128342788), (2, 64171394), (4, 32085697), (7, 18334684), (14, 9167342), (28, 4583671), (37, 3468724), (43, 2984716), (67, 1915564), (74, 1734362), (86, 1492358), (134, 957782), (148, 867181), (172, 746179), (259, 495532), (268, 478891), (301, 426388), (469, 273652), (518, 247766), (602, 213194), (938, 136826), (1036, 123883), (1204, 106597), (1591, 80668), (1849, 69412), (1876, 68413), (2479, 51772), (2881, 44548), (3182, 40334), (3698, 34706), (4958, 25886), (5762, 22274), (6364, 20167), (7396, 17353), (9916, 12943), (11137, 11524)]