21903726

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{280817}}^1$

素因数の和:280835

約数の個数: 16

約数和(自身を含む): 47177424

約数和(自身を除く): 25273698

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 280817, 561634, 842451, 1684902, 3650621, 7301242, 10951863, 21903726]

約数ペア:

[(1, 21903726), (2, 10951863), (3, 7301242), (6, 3650621), (13, 1684902), (26, 842451), (39, 561634), (78, 280817)]