80748920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{288389}}^1$

素因数の和:288407

約数の個数: 32

約数和(自身を含む): 207640800

約数和(自身を除く): 126891880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 288389, 576778, 1153556, 1441945, 2018723, 2307112, 2883890, 4037446, 5767780, 8074892, 10093615, 11535560, 16149784, 20187230, 40374460, 80748920]

約数ペア:

[(1, 80748920), (2, 40374460), (4, 20187230), (5, 16149784), (7, 11535560), (8, 10093615), (10, 8074892), (14, 5767780), (20, 4037446), (28, 2883890), (35, 2307112), (40, 2018723), (56, 1441945), (70, 1153556), (140, 576778), (280, 288389)]