21038185

素因数分解:

$5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{4733}}^1$

素因数の和:4872

約数の個数: 16

約数和(自身を含む): 29085696

約数和(自身を除く): 8047511

約数列:

[1, 5, 7, 35, 127, 635, 889, 4445, 4733, 23665, 33131, 165655, 601091, 3005455, 4207637, 21038185]

約数ペア:

[(1, 21038185), (5, 4207637), (7, 3005455), (35, 601091), (127, 165655), (635, 33131), (889, 23665), (4445, 4733)]