21093970

素因数分解:

$2^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{6871}}^1$

素因数の和:7185

約数の個数: 16

約数和(自身を含む): 38098368

約数和(自身を除く): 17004398

約数列:

[1, 2, 5, 10, 307, 614, 1535, 3070, 6871, 13742, 34355, 68710, 2109397, 4218794, 10546985, 21093970]

約数ペア:

[(1, 21093970), (2, 10546985), (5, 4218794), (10, 2109397), (307, 68710), (614, 34355), (1535, 13742), (3070, 6871)]