21613005

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4663}}^1$

素因数の和:4777

約数の個数: 24

約数和(自身を含む): 37834368

約数和(自身を除く): 16221363

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4635, 4663, 13989, 23315, 41967, 69945, 209835, 480289, 1440867, 2401445, 4322601, 7204335, 21613005]

約数ペア:

[(1, 21613005), (3, 7204335), (5, 4322601), (9, 2401445), (15, 1440867), (45, 480289), (103, 209835), (309, 69945), (515, 41967), (927, 23315), (1545, 13989), (4635, 4663)]