81977320

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{5351}}^1$

素因数の和:5745

約数の個数: 32

約数和(自身を含む): 184965120

約数和(自身を除く): 102987800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 3064, 3830, 5351, 7660, 10702, 15320, 21404, 26755, 42808, 53510, 107020, 214040, 2049433, 4098866, 8197732, 10247165, 16395464, 20494330, 40988660, 81977320]

約数ペア:

[(1, 81977320), (2, 40988660), (4, 20494330), (5, 16395464), (8, 10247165), (10, 8197732), (20, 4098866), (40, 2049433), (383, 214040), (766, 107020), (1532, 53510), (1915, 42808), (3064, 26755), (3830, 21404), (5351, 15320), (7660, 10702)]