8440240

素因数分解:

$2^4\times 5^1\times {\mathrm{105503}}^1$

素因数の和:105516

約数の個数: 20

約数和(自身を含む): 19623744

約数和(自身を除く): 11183504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 105503, 211006, 422012, 527515, 844024, 1055030, 1688048, 2110060, 4220120, 8440240]

約数ペア:

[(1, 8440240), (2, 4220120), (4, 2110060), (5, 1688048), (8, 1055030), (10, 844024), (16, 527515), (20, 422012), (40, 211006), (80, 105503)]