197731980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1098511}}^1$

素因数の和:1098526

約数の個数: 36

約数和(自身を含む): 599787552

約数和(自身を除く): 402055572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1098511, 2197022, 3295533, 4394044, 5492555, 6591066, 9886599, 10985110, 13182132, 16477665, 19773198, 21970220, 32955330, 39546396, 49432995, 65910660, 98865990, 197731980]

約数ペア:

[(1, 197731980), (2, 98865990), (3, 65910660), (4, 49432995), (5, 39546396), (6, 32955330), (9, 21970220), (10, 19773198), (12, 16477665), (15, 13182132), (18, 10985110), (20, 9886599), (30, 6591066), (36, 5492555), (45, 4394044), (60, 3295533), (90, 2197022), (180, 1098511)]