20987370

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{77731}}^1$

素因数の和:77747

約数の個数: 32

約数和(自身を含む): 55967040

約数和(自身を除く): 34979670

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 77731, 155462, 233193, 388655, 466386, 699579, 777310, 1165965, 1399158, 2098737, 2331930, 3497895, 4197474, 6995790, 10493685, 20987370]

約数ペア:

[(1, 20987370), (2, 10493685), (3, 6995790), (5, 4197474), (6, 3497895), (9, 2331930), (10, 2098737), (15, 1399158), (18, 1165965), (27, 777310), (30, 699579), (45, 466386), (54, 388655), (90, 233193), (135, 155462), (270, 77731)]