18897291

素因数分解:

$3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{587}}^1$

素因数の和:680

約数の個数: 36

約数和(自身を含む): 32242392

約数和(自身を除く): 13345101

約数列:

[1, 3, 7, 9, 21, 49, 63, 73, 147, 219, 441, 511, 587, 657, 1533, 1761, 3577, 4109, 4599, 5283, 10731, 12327, 28763, 32193, 36981, 42851, 86289, 128553, 258867, 299957, 385659, 899871, 2099699, 2699613, 6299097, 18897291]

約数ペア:

[(1, 18897291), (3, 6299097), (7, 2699613), (9, 2099699), (21, 899871), (49, 385659), (63, 299957), (73, 258867), (147, 128553), (219, 86289), (441, 42851), (511, 36981), (587, 32193), (657, 28763), (1533, 12327), (1761, 10731), (3577, 5283), (4109, 4599)]