81859815

素因数分解:

$3^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1889}}^1$

素因数の和:2013

約数の個数: 40

約数和(自身を含む): 148191120

約数和(自身を除く): 66331305

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 107, 135, 321, 405, 535, 963, 1605, 1889, 2889, 4815, 5667, 8667, 9445, 14445, 17001, 28335, 43335, 51003, 85005, 153009, 202123, 255015, 606369, 765045, 1010615, 1819107, 3031845, 5457321, 9095535, 16371963, 27286605, 81859815]

約数ペア:

[(1, 81859815), (3, 27286605), (5, 16371963), (9, 9095535), (15, 5457321), (27, 3031845), (45, 1819107), (81, 1010615), (107, 765045), (135, 606369), (321, 255015), (405, 202123), (535, 153009), (963, 85005), (1605, 51003), (1889, 43335), (2889, 28335), (4815, 17001), (5667, 14445), (8667, 9445)]