18840185

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{881}}^1$

素因数の和:953

約数の個数: 32

約数和(自身を含む): 28449792

約数和(自身を除く): 9609607

約数列:

[1, 5, 7, 13, 35, 47, 65, 91, 235, 329, 455, 611, 881, 1645, 3055, 4277, 4405, 6167, 11453, 21385, 30835, 41407, 57265, 80171, 207035, 289849, 400855, 538291, 1449245, 2691455, 3768037, 18840185]

約数ペア:

[(1, 18840185), (5, 3768037), (7, 2691455), (13, 1449245), (35, 538291), (47, 400855), (65, 289849), (91, 207035), (235, 80171), (329, 57265), (455, 41407), (611, 30835), (881, 21385), (1645, 11453), (3055, 6167), (4277, 4405)]