20713520

素因数分解:

$2^4\times 5^1\times {\mathrm{258919}}^1$

素因数の和:258932

約数の個数: 20

約数和(自身を含む): 48159120

約数和(自身を除く): 27445600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 258919, 517838, 1035676, 1294595, 2071352, 2589190, 4142704, 5178380, 10356760, 20713520]

約数ペア:

[(1, 20713520), (2, 10356760), (4, 5178380), (5, 4142704), (8, 2589190), (10, 2071352), (16, 1294595), (20, 1035676), (40, 517838), (80, 258919)]