128908450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{811}}^1$

素因数の和:868

約数の個数: 72

約数和(自身を含む): 278200944

約数和(自身を除く): 149292494

約数列:

[1, 2, 5, 10, 11, 17, 22, 25, 34, 50, 55, 85, 110, 170, 187, 275, 289, 374, 425, 550, 578, 811, 850, 935, 1445, 1622, 1870, 2890, 3179, 4055, 4675, 6358, 7225, 8110, 8921, 9350, 13787, 14450, 15895, 17842, 20275, 27574, 31790, 40550, 44605, 68935, 79475, 89210, 137870, 151657, 158950, 223025, 234379, 303314, 344675, 446050, 468758, 689350, 758285, 1171895, 1516570, 2343790, 2578169, 3791425, 5156338, 5859475, 7582850, 11718950, 12890845, 25781690, 64454225, 128908450]

約数ペア:

[(1, 128908450), (2, 64454225), (5, 25781690), (10, 12890845), (11, 11718950), (17, 7582850), (22, 5859475), (25, 5156338), (34, 3791425), (50, 2578169), (55, 2343790), (85, 1516570), (110, 1171895), (170, 758285), (187, 689350), (275, 468758), (289, 446050), (374, 344675), (425, 303314), (550, 234379), (578, 223025), (811, 158950), (850, 151657), (935, 137870), (1445, 89210), (1622, 79475), (1870, 68935), (2890, 44605), (3179, 40550), (4055, 31790), (4675, 27574), (6358, 20275), (7225, 17842), (8110, 15895), (8921, 14450), (9350, 13787)]