8680240

素因数分解:

$2^4\times 5^1\times {\mathrm{108503}}^1$

素因数の和:108516

約数の個数: 20

約数和(自身を含む): 20181744

約数和(自身を除く): 11501504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 108503, 217006, 434012, 542515, 868024, 1085030, 1736048, 2170060, 4340120, 8680240]

約数ペア:

[(1, 8680240), (2, 4340120), (4, 2170060), (5, 1736048), (8, 1085030), (10, 868024), (16, 542515), (20, 434012), (40, 217006), (80, 108503)]