221877680

素因数分解:

$2^4\times 5^1\times {\mathrm{2773471}}^1$

素因数の和:2773484

約数の個数: 20

約数和(自身を含む): 515865792

約数和(自身を除く): 293988112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2773471, 5546942, 11093884, 13867355, 22187768, 27734710, 44375536, 55469420, 110938840, 221877680]

約数ペア:

[(1, 221877680), (2, 110938840), (4, 55469420), (5, 44375536), (8, 27734710), (10, 22187768), (16, 13867355), (20, 11093884), (40, 5546942), (80, 2773471)]