21319689

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{1231}}^1$

素因数の和:1508

約数の個数: 16

約数和(自身を含む): 29804544

約数和(自身を除く): 8484855

約数列:

[1, 3, 23, 69, 251, 753, 1231, 3693, 5773, 17319, 28313, 84939, 308981, 926943, 7106563, 21319689]

約数ペア:

[(1, 21319689), (3, 7106563), (23, 926943), (69, 308981), (251, 84939), (753, 28313), (1231, 17319), (3693, 5773)]