21182205

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128377}}^1$

素因数の和:128396

約数の個数: 16

約数和(自身を含む): 36972864

約数和(自身を除く): 15790659

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128377, 385131, 641885, 1412147, 1925655, 4236441, 7060735, 21182205]

約数ペア:

[(1, 21182205), (3, 7060735), (5, 4236441), (11, 1925655), (15, 1412147), (33, 641885), (55, 385131), (165, 128377)]