1213820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 2573424

約数和(自身を除く): 1359604

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 443, 548, 685, 886, 1370, 1772, 2215, 2740, 4430, 8860, 60691, 121382, 242764, 303455, 606910, 1213820]

約数ペア:

[(1, 1213820), (2, 606910), (4, 303455), (5, 242764), (10, 121382), (20, 60691), (137, 8860), (274, 4430), (443, 2740), (548, 2215), (685, 1772), (886, 1370)]