1720240

素因数分解:

$2^4\times 5^1\times {\mathrm{21503}}^1$

素因数の和:21516

約数の個数: 20

約数和(自身を含む): 3999744

約数和(自身を除く): 2279504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21503, 43006, 86012, 107515, 172024, 215030, 344048, 430060, 860120, 1720240]

約数ペア:

[(1, 1720240), (2, 860120), (4, 430060), (5, 344048), (8, 215030), (10, 172024), (16, 107515), (20, 86012), (40, 43006), (80, 21503)]