20247705

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6521}}^1$

素因数の和:6558

約数の個数: 32

約数和(自身を含む): 37566720

約数和(自身を除く): 17319015

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6521, 19563, 32605, 58689, 97815, 149983, 176067, 293445, 449949, 749915, 880335, 1349847, 2249745, 4049541, 6749235, 20247705]

約数ペア:

[(1, 20247705), (3, 6749235), (5, 4049541), (9, 2249745), (15, 1349847), (23, 880335), (27, 749915), (45, 449949), (69, 293445), (115, 176067), (135, 149983), (207, 97815), (345, 58689), (621, 32605), (1035, 19563), (3105, 6521)]