780920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2789}}^1$

素因数の和:2807

約数の個数: 32

約数和(自身を含む): 2008800

約数和(自身を除く): 1227880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2789, 5578, 11156, 13945, 19523, 22312, 27890, 39046, 55780, 78092, 97615, 111560, 156184, 195230, 390460, 780920]

約数ペア:

[(1, 780920), (2, 390460), (4, 195230), (5, 156184), (7, 111560), (8, 97615), (10, 78092), (14, 55780), (20, 39046), (28, 27890), (35, 22312), (40, 19523), (56, 13945), (70, 11156), (140, 5578), (280, 2789)]