80988920

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{14779}}^1$

素因数の和:14927

約数の個数: 32

約数和(自身を含む): 183567600

約数和(自身を除く): 102578680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 14779, 29558, 59116, 73895, 118232, 147790, 295580, 591160, 2024723, 4049446, 8098892, 10123615, 16197784, 20247230, 40494460, 80988920]

約数ペア:

[(1, 80988920), (2, 40494460), (4, 20247230), (5, 16197784), (8, 10123615), (10, 8098892), (20, 4049446), (40, 2024723), (137, 591160), (274, 295580), (548, 147790), (685, 118232), (1096, 73895), (1370, 59116), (2740, 29558), (5480, 14779)]