21010245

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13826235

約数列:

[1, 3, 5, 15, 41, 123, 127, 205, 269, 381, 615, 635, 807, 1345, 1905, 4035, 5207, 11029, 15621, 26035, 33087, 34163, 55145, 78105, 102489, 165435, 170815, 512445, 1400683, 4202049, 7003415, 21010245]

約数ペア:

[(1, 21010245), (3, 7003415), (5, 4202049), (15, 1400683), (41, 512445), (123, 170815), (127, 165435), (205, 102489), (269, 78105), (381, 55145), (615, 34163), (635, 33087), (807, 26035), (1345, 15621), (1905, 11029), (4035, 5207)]