420210760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{1987}}^1$

素因数の和:2326

約数の個数: 64

約数和(自身を含む): 1004814720

約数和(自身を除く): 584603960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 311, 340, 622, 680, 1244, 1555, 1987, 2488, 3110, 3974, 5287, 6220, 7948, 9935, 10574, 12440, 15896, 19870, 21148, 26435, 33779, 39740, 42296, 52870, 67558, 79480, 105740, 135116, 168895, 211480, 270232, 337790, 617957, 675580, 1235914, 1351160, 2471828, 3089785, 4943656, 6179570, 10505269, 12359140, 21010538, 24718280, 42021076, 52526345, 84042152, 105052690, 210105380, 420210760]

約数ペア:

[(1, 420210760), (2, 210105380), (4, 105052690), (5, 84042152), (8, 52526345), (10, 42021076), (17, 24718280), (20, 21010538), (34, 12359140), (40, 10505269), (68, 6179570), (85, 4943656), (136, 3089785), (170, 2471828), (311, 1351160), (340, 1235914), (622, 675580), (680, 617957), (1244, 337790), (1555, 270232), (1987, 211480), (2488, 168895), (3110, 135116), (3974, 105740), (5287, 79480), (6220, 67558), (7948, 52870), (9935, 42296), (10574, 39740), (12440, 33779), (15896, 26435), (19870, 21148)]