18842681

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 24530688

約数和(自身を除く): 5688007

約数列:

[1, 11, 13, 17, 23, 143, 187, 221, 253, 299, 337, 391, 2431, 3289, 3707, 4301, 4381, 5083, 5729, 7751, 48191, 55913, 63019, 74477, 85261, 100763, 131767, 819247, 1108393, 1449437, 1712971, 18842681]

約数ペア:

[(1, 18842681), (11, 1712971), (13, 1449437), (17, 1108393), (23, 819247), (143, 131767), (187, 100763), (221, 85261), (253, 74477), (299, 63019), (337, 55913), (391, 48191), (2431, 7751), (3289, 5729), (3707, 5083), (4301, 4381)]