20658285

素因数分解:

$3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5531}}^1$

素因数の和:5625

約数の個数: 24

約数和(自身を含む): 36245664

約数和(自身を除く): 15587379

約数列:

[1, 3, 5, 9, 15, 45, 83, 249, 415, 747, 1245, 3735, 5531, 16593, 27655, 49779, 82965, 248895, 459073, 1377219, 2295365, 4131657, 6886095, 20658285]

約数ペア:

[(1, 20658285), (3, 6886095), (5, 4131657), (9, 2295365), (15, 1377219), (45, 459073), (83, 248895), (249, 82965), (415, 49779), (747, 27655), (1245, 16593), (3735, 5531)]