12665840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:450

約数の個数: 80

約数和(自身を含む): 33078240

約数和(自身を除く): 20412400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 389, 407, 440, 592, 740, 778, 814, 880, 1480, 1556, 1628, 1945, 2035, 2960, 3112, 3256, 3890, 4070, 4279, 6224, 6512, 7780, 8140, 8558, 14393, 15560, 16280, 17116, 21395, 28786, 31120, 32560, 34232, 42790, 57572, 68464, 71965, 85580, 115144, 143930, 158323, 171160, 230288, 287860, 316646, 342320, 575720, 633292, 791615, 1151440, 1266584, 1583230, 2533168, 3166460, 6332920, 12665840]

約数ペア:

[(1, 12665840), (2, 6332920), (4, 3166460), (5, 2533168), (8, 1583230), (10, 1266584), (11, 1151440), (16, 791615), (20, 633292), (22, 575720), (37, 342320), (40, 316646), (44, 287860), (55, 230288), (74, 171160), (80, 158323), (88, 143930), (110, 115144), (148, 85580), (176, 71965), (185, 68464), (220, 57572), (296, 42790), (370, 34232), (389, 32560), (407, 31120), (440, 28786), (592, 21395), (740, 17116), (778, 16280), (814, 15560), (880, 14393), (1480, 8558), (1556, 8140), (1628, 7780), (1945, 6512), (2035, 6224), (2960, 4279), (3112, 4070), (3256, 3890)]