28335560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64399}}^1$

素因数の和:64421

約数の個数: 32

約数和(自身を含む): 69552000

約数和(自身を除く): 41216440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64399, 128798, 257596, 321995, 515192, 643990, 708389, 1287980, 1416778, 2575960, 2833556, 3541945, 5667112, 7083890, 14167780, 28335560]

約数ペア:

[(1, 28335560), (2, 14167780), (4, 7083890), (5, 5667112), (8, 3541945), (10, 2833556), (11, 2575960), (20, 1416778), (22, 1287980), (40, 708389), (44, 643990), (55, 515192), (88, 321995), (110, 257596), (220, 128798), (440, 64399)]