21279285

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4591}}^1$

素因数の和:4705

約数の個数: 24

約数和(自身を含む): 37250304

約数和(自身を除く): 15971019

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4591, 4635, 13773, 22955, 41319, 68865, 206595, 472873, 1418619, 2364365, 4255857, 7093095, 21279285]

約数ペア:

[(1, 21279285), (3, 7093095), (5, 4255857), (9, 2364365), (15, 1418619), (45, 472873), (103, 206595), (309, 68865), (515, 41319), (927, 22955), (1545, 13773), (4591, 4635)]