77779640

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{5077}}^1$

素因数の和:5471

約数の個数: 32

約数和(自身を含む): 175495680

約数和(自身を除く): 97716040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 3064, 3830, 5077, 7660, 10154, 15320, 20308, 25385, 40616, 50770, 101540, 203080, 1944491, 3888982, 7777964, 9722455, 15555928, 19444910, 38889820, 77779640]

約数ペア:

[(1, 77779640), (2, 38889820), (4, 19444910), (5, 15555928), (8, 9722455), (10, 7777964), (20, 3888982), (40, 1944491), (383, 203080), (766, 101540), (1532, 50770), (1915, 40616), (3064, 25385), (3830, 20308), (5077, 15320), (7660, 10154)]