28172680

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 65726640

約数和(自身を除く): 37553960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 97, 106, 137, 194, 212, 265, 274, 388, 424, 485, 530, 548, 685, 776, 970, 1060, 1096, 1370, 1940, 2120, 2740, 3880, 5141, 5480, 7261, 10282, 13289, 14522, 20564, 25705, 26578, 29044, 36305, 41128, 51410, 53156, 58088, 66445, 72610, 102820, 106312, 132890, 145220, 205640, 265780, 290440, 531560, 704317, 1408634, 2817268, 3521585, 5634536, 7043170, 14086340, 28172680]

約数ペア:

[(1, 28172680), (2, 14086340), (4, 7043170), (5, 5634536), (8, 3521585), (10, 2817268), (20, 1408634), (40, 704317), (53, 531560), (97, 290440), (106, 265780), (137, 205640), (194, 145220), (212, 132890), (265, 106312), (274, 102820), (388, 72610), (424, 66445), (485, 58088), (530, 53156), (548, 51410), (685, 41128), (776, 36305), (970, 29044), (1060, 26578), (1096, 25705), (1370, 20564), (1940, 14522), (2120, 13289), (2740, 10282), (3880, 7261), (5141, 5480)]