80821880

素因数分解:

$2^3\times 5^1\times {\mathrm{2020547}}^1$

素因数の和:2020558

約数の個数: 16

約数和(自身を含む): 181849320

約数和(自身を除く): 101027440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2020547, 4041094, 8082188, 10102735, 16164376, 20205470, 40410940, 80821880]

約数ペア:

[(1, 80821880), (2, 40410940), (4, 20205470), (5, 16164376), (8, 10102735), (10, 8082188), (20, 4041094), (40, 2020547)]