20566665

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 41184000

約数和(自身を除く): 20617335

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 109, 315, 327, 545, 599, 763, 981, 1635, 1797, 2289, 2995, 3815, 4193, 4905, 5391, 6867, 8985, 11445, 12579, 20965, 26955, 34335, 37737, 62895, 65291, 188685, 195873, 326455, 457037, 587619, 979365, 1371111, 2285185, 2938095, 4113333, 6855555, 20566665]

約数ペア:

[(1, 20566665), (3, 6855555), (5, 4113333), (7, 2938095), (9, 2285185), (15, 1371111), (21, 979365), (35, 587619), (45, 457037), (63, 326455), (105, 195873), (109, 188685), (315, 65291), (327, 62895), (545, 37737), (599, 34335), (763, 26955), (981, 20965), (1635, 12579), (1797, 11445), (2289, 8985), (2995, 6867), (3815, 5391), (4193, 4905)]