18901135

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{857}}^1$

素因数の和:1274

約数の個数: 16

約数和(自身を含む): 24833952

約数和(自身を除く): 5932817

約数列:

[1, 5, 11, 55, 401, 857, 2005, 4285, 4411, 9427, 22055, 47135, 343657, 1718285, 3780227, 18901135]

約数ペア:

[(1, 18901135), (5, 3780227), (11, 1718285), (55, 343657), (401, 47135), (857, 22055), (2005, 9427), (4285, 4411)]