21912105

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{31081}}^1$

素因数の和:31136

約数の個数: 16

約数和(自身を含む): 35806464

約数和(自身を除く): 13894359

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 31081, 93243, 155405, 466215, 1460807, 4382421, 7304035, 21912105]

約数ペア:

[(1, 21912105), (3, 7304035), (5, 4382421), (15, 1460807), (47, 466215), (141, 155405), (235, 93243), (705, 31081)]