90991980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{505511}}^1$

素因数の和:505526

約数の個数: 36

約数和(自身を含む): 276009552

約数和(自身を除く): 185017572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 505511, 1011022, 1516533, 2022044, 2527555, 3033066, 4549599, 5055110, 6066132, 7582665, 9099198, 10110220, 15165330, 18198396, 22747995, 30330660, 45495990, 90991980]

約数ペア:

[(1, 90991980), (2, 45495990), (3, 30330660), (4, 22747995), (5, 18198396), (6, 15165330), (9, 10110220), (10, 9099198), (12, 7582665), (15, 6066132), (18, 5055110), (20, 4549599), (30, 3033066), (36, 2527555), (45, 2022044), (60, 1516533), (90, 1011022), (180, 505511)]