20210985

素因数分解:

$3^3\times 5^1\times {\mathrm{149711}}^1$

素因数の和:149725

約数の個数: 16

約数和(自身を含む): 35930880

約数和(自身を除く): 15719895

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 149711, 449133, 748555, 1347399, 2245665, 4042197, 6736995, 20210985]

約数ペア:

[(1, 20210985), (3, 6736995), (5, 4042197), (9, 2245665), (15, 1347399), (27, 748555), (45, 449133), (135, 149711)]