20451291

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{6203}}^1$

素因数の和:6370

約数の個数: 16

約数和(自身を含む): 31367424

約数和(自身を除く): 10916133

約数列:

[1, 3, 7, 21, 157, 471, 1099, 3297, 6203, 18609, 43421, 130263, 973871, 2921613, 6817097, 20451291]

約数ペア:

[(1, 20451291), (3, 6817097), (7, 2921613), (21, 973871), (157, 130263), (471, 43421), (1099, 18609), (3297, 6203)]