17938840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5039}}^1$

素因数の和:5139

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 22885160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5039, 10078, 20156, 25195, 40312, 50390, 100780, 201560, 448471, 896942, 1793884, 2242355, 3587768, 4484710, 8969420, 17938840]

約数ペア:

[(1, 17938840), (2, 8969420), (4, 4484710), (5, 3587768), (8, 2242355), (10, 1793884), (20, 896942), (40, 448471), (89, 201560), (178, 100780), (356, 50390), (445, 40312), (712, 25195), (890, 20156), (1780, 10078), (3560, 5039)]