20805897

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9619}}^1$

素因数の和:9732

約数の個数: 16

約数和(自身を含む): 32015360

約数和(自身を除く): 11209463

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9619, 28857, 67333, 201999, 990757, 2972271, 6935299, 20805897]

約数ペア:

[(1, 20805897), (3, 6935299), (7, 2972271), (21, 990757), (103, 201999), (309, 67333), (721, 28857), (2163, 9619)]