21865778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{547}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 37877760

約数和(自身を除く): 16011982

約数列:

[1, 2, 11, 22, 23, 46, 79, 158, 253, 506, 547, 869, 1094, 1738, 1817, 3634, 6017, 12034, 12581, 19987, 25162, 39974, 43213, 86426, 138391, 276782, 475343, 950686, 993899, 1987798, 10932889, 21865778]

約数ペア:

[(1, 21865778), (2, 10932889), (11, 1987798), (22, 993899), (23, 950686), (46, 475343), (79, 276782), (158, 138391), (253, 86426), (506, 43213), (547, 39974), (869, 25162), (1094, 19987), (1738, 12581), (1817, 12034), (3634, 6017)]