80307640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{286813}}^1$

素因数の和:286831

約数の個数: 32

約数和(自身を含む): 206506080

約数和(自身を除く): 126198440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 286813, 573626, 1147252, 1434065, 2007691, 2294504, 2868130, 4015382, 5736260, 8030764, 10038455, 11472520, 16061528, 20076910, 40153820, 80307640]

約数ペア:

[(1, 80307640), (2, 40153820), (4, 20076910), (5, 16061528), (7, 11472520), (8, 10038455), (10, 8030764), (14, 5736260), (20, 4015382), (28, 2868130), (35, 2294504), (40, 2007691), (56, 1434065), (70, 1147252), (140, 573626), (280, 286813)]