66811990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{136351}}^1$

素因数の和:136372

約数の個数: 24

約数和(自身を含む): 139897152

約数和(自身を除く): 73085162

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 136351, 272702, 681755, 954457, 1363510, 1908914, 4772285, 6681199, 9544570, 13362398, 33405995, 66811990]

約数ペア:

[(1, 66811990), (2, 33405995), (5, 13362398), (7, 9544570), (10, 6681199), (14, 4772285), (35, 1908914), (49, 1363510), (70, 954457), (98, 681755), (245, 272702), (490, 136351)]