21009232

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{3967}}^1$

素因数の和:4306

約数の個数: 20

約数和(自身を含む): 40838656

約数和(自身を除く): 19829424

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 3967, 5296, 7934, 15868, 31736, 63472, 1313077, 2626154, 5252308, 10504616, 21009232]

約数ペア:

[(1, 21009232), (2, 10504616), (4, 5252308), (8, 2626154), (16, 1313077), (331, 63472), (662, 31736), (1324, 15868), (2648, 7934), (3967, 5296)]