28875160

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8111}}^1$

素因数の和:8211

約数の個数: 32

約数和(自身を含む): 65707200

約数和(自身を除く): 36832040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8111, 16222, 32444, 40555, 64888, 81110, 162220, 324440, 721879, 1443758, 2887516, 3609395, 5775032, 7218790, 14437580, 28875160]

約数ペア:

[(1, 28875160), (2, 14437580), (4, 7218790), (5, 5775032), (8, 3609395), (10, 2887516), (20, 1443758), (40, 721879), (89, 324440), (178, 162220), (356, 81110), (445, 64888), (712, 40555), (890, 32444), (1780, 16222), (3560, 8111)]