128528750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:463

約数の個数: 80

約数和(自身を含む): 283484256

約数和(自身を除く): 154955506

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 37, 50, 70, 74, 125, 175, 185, 250, 259, 350, 370, 397, 518, 625, 794, 875, 925, 1250, 1295, 1750, 1850, 1985, 2590, 2779, 3970, 4375, 4625, 5558, 6475, 8750, 9250, 9925, 12950, 13895, 14689, 19850, 23125, 27790, 29378, 32375, 46250, 49625, 64750, 69475, 73445, 99250, 102823, 138950, 146890, 161875, 205646, 248125, 323750, 347375, 367225, 496250, 514115, 694750, 734450, 1028230, 1736875, 1836125, 2570575, 3473750, 3672250, 5141150, 9180625, 12852875, 18361250, 25705750, 64264375, 128528750]

約数ペア:

[(1, 128528750), (2, 64264375), (5, 25705750), (7, 18361250), (10, 12852875), (14, 9180625), (25, 5141150), (35, 3672250), (37, 3473750), (50, 2570575), (70, 1836125), (74, 1736875), (125, 1028230), (175, 734450), (185, 694750), (250, 514115), (259, 496250), (350, 367225), (370, 347375), (397, 323750), (518, 248125), (625, 205646), (794, 161875), (875, 146890), (925, 138950), (1250, 102823), (1295, 99250), (1750, 73445), (1850, 69475), (1985, 64750), (2590, 49625), (2779, 46250), (3970, 32375), (4375, 29378), (4625, 27790), (5558, 23125), (6475, 19850), (8750, 14689), (9250, 13895), (9925, 12950)]