84389980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{38711}}^1$

素因数の和:38829

約数の個数: 24

約数和(自身を含む): 178849440

約数和(自身を除く): 94459460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 38711, 77422, 154844, 193555, 387110, 774220, 4219499, 8438998, 16877996, 21097495, 42194990, 84389980]

約数ペア:

[(1, 84389980), (2, 42194990), (4, 21097495), (5, 16877996), (10, 8438998), (20, 4219499), (109, 774220), (218, 387110), (436, 193555), (545, 154844), (1090, 77422), (2180, 38711)]