21391190

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{29303}}^1$

素因数の和:29383

約数の個数: 16

約数和(自身を含む): 39032928

約数和(自身を除く): 17641738

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 29303, 58606, 146515, 293030, 2139119, 4278238, 10695595, 21391190]

約数ペア:

[(1, 21391190), (2, 10695595), (5, 4278238), (10, 2139119), (73, 293030), (146, 146515), (365, 58606), (730, 29303)]