80885840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144439}}^1$

素因数の和:144459

約数の個数: 40

約数和(自身を含む): 214926720

約数和(自身を除く): 134040880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144439, 288878, 577756, 722195, 1011073, 1155512, 1444390, 2022146, 2311024, 2888780, 4044292, 5055365, 5777560, 8088584, 10110730, 11555120, 16177168, 20221460, 40442920, 80885840]

約数ペア:

[(1, 80885840), (2, 40442920), (4, 20221460), (5, 16177168), (7, 11555120), (8, 10110730), (10, 8088584), (14, 5777560), (16, 5055365), (20, 4044292), (28, 2888780), (35, 2311024), (40, 2022146), (56, 1444390), (70, 1155512), (80, 1011073), (112, 722195), (140, 577756), (280, 288878), (560, 144439)]