42640720

素因数分解:

$2^4\times 5^1\times {\mathrm{533009}}^1$

素因数の和:533022

約数の個数: 20

約数和(自身を含む): 99139860

約数和(自身を除く): 56499140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 533009, 1066018, 2132036, 2665045, 4264072, 5330090, 8528144, 10660180, 21320360, 42640720]

約数ペア:

[(1, 42640720), (2, 21320360), (4, 10660180), (5, 8528144), (8, 5330090), (10, 4264072), (16, 2665045), (20, 2132036), (40, 1066018), (80, 533009)]