80816180

素因数分解:

$2^2\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{2969}}^1$

素因数の和:4339

約数の個数: 24

約数和(自身を含む): 169895880

約数和(自身を除く): 89079700

約数列:

[1, 2, 4, 5, 10, 20, 1361, 2722, 2969, 5444, 5938, 6805, 11876, 13610, 14845, 27220, 29690, 59380, 4040809, 8081618, 16163236, 20204045, 40408090, 80816180]

約数ペア:

[(1, 80816180), (2, 40408090), (4, 20204045), (5, 16163236), (10, 8081618), (20, 4040809), (1361, 59380), (2722, 29690), (2969, 27220), (5444, 14845), (5938, 13610), (6805, 11876)]