20944005

素因数分解:

$3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{5309}}^1$

素因数の和:5580

約数の個数: 16

約数和(自身を含む): 33644160

約数和(自身を除く): 12700155

約数列:

[1, 3, 5, 15, 263, 789, 1315, 3945, 5309, 15927, 26545, 79635, 1396267, 4188801, 6981335, 20944005]

約数ペア:

[(1, 20944005), (3, 6981335), (5, 4188801), (15, 1396267), (263, 79635), (789, 26545), (1315, 15927), (3945, 5309)]