20699965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 31306176

約数和(自身を除く): 10606211

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 131, 143, 169, 187, 221, 655, 715, 845, 935, 1105, 1441, 1703, 1859, 2227, 2431, 2873, 7205, 8515, 9295, 11135, 12155, 14365, 18733, 22139, 24497, 28951, 31603, 93665, 110695, 122485, 144755, 158015, 243529, 318461, 376363, 1217645, 1592305, 1881815, 4139993, 20699965]

約数ペア:

[(1, 20699965), (5, 4139993), (11, 1881815), (13, 1592305), (17, 1217645), (55, 376363), (65, 318461), (85, 243529), (131, 158015), (143, 144755), (169, 122485), (187, 110695), (221, 93665), (655, 31603), (715, 28951), (845, 24497), (935, 22139), (1105, 18733), (1441, 14365), (1703, 12155), (1859, 11135), (2227, 9295), (2431, 8515), (2873, 7205)]