21395451

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4027}}^1$

素因数の和:4071

約数の個数: 32

約数和(自身を含む): 37122048

約数和(自身を除く): 15726597

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 231, 253, 483, 759, 1771, 4027, 5313, 12081, 28189, 44297, 84567, 92621, 132891, 277863, 310079, 648347, 930237, 1018831, 1945041, 3056493, 7131817, 21395451]

約数ペア:

[(1, 21395451), (3, 7131817), (7, 3056493), (11, 1945041), (21, 1018831), (23, 930237), (33, 648347), (69, 310079), (77, 277863), (161, 132891), (231, 92621), (253, 84567), (483, 44297), (759, 28189), (1771, 12081), (4027, 5313)]