55213820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{31019}}^1$

素因数の和:31117

約数の個数: 24

約数和(自身を含む): 117255600

約数和(自身を除く): 62041780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 31019, 62038, 124076, 155095, 310190, 620380, 2760691, 5521382, 11042764, 13803455, 27606910, 55213820]

約数ペア:

[(1, 55213820), (2, 27606910), (4, 13803455), (5, 11042764), (10, 5521382), (20, 2760691), (89, 620380), (178, 310190), (356, 155095), (445, 124076), (890, 62038), (1780, 31019)]