21307040

素因数分解:

$2^5\times 5^1\times {\mathrm{133169}}^1$

素因数の和:133184

約数の個数: 24

約数和(自身を含む): 50338260

約数和(自身を除く): 29031220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133169, 266338, 532676, 665845, 1065352, 1331690, 2130704, 2663380, 4261408, 5326760, 10653520, 21307040]

約数ペア:

[(1, 21307040), (2, 10653520), (4, 5326760), (5, 4261408), (8, 2663380), (10, 2130704), (16, 1331690), (20, 1065352), (32, 665845), (40, 532676), (80, 266338), (160, 133169)]