80821980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{449011}}^1$

素因数の和:449026

約数の個数: 36

約数和(自身を含む): 245160552

約数和(自身を除く): 164338572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 449011, 898022, 1347033, 1796044, 2245055, 2694066, 4041099, 4490110, 5388132, 6735165, 8082198, 8980220, 13470330, 16164396, 20205495, 26940660, 40410990, 80821980]

約数ペア:

[(1, 80821980), (2, 40410990), (3, 26940660), (4, 20205495), (5, 16164396), (6, 13470330), (9, 8980220), (10, 8082198), (12, 6735165), (15, 5388132), (18, 4490110), (20, 4041099), (30, 2694066), (36, 2245055), (45, 1796044), (60, 1347033), (90, 898022), (180, 449011)]