81804080

素因数分解:

$2^4\times 5^1\times {\mathrm{797}}^1\times {\mathrm{1283}}^1$

素因数の和:2093

約数の個数: 40

約数和(自身を含む): 190581552

約数和(自身を除く): 108777472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 797, 1283, 1594, 2566, 3188, 3985, 5132, 6376, 6415, 7970, 10264, 12752, 12830, 15940, 20528, 25660, 31880, 51320, 63760, 102640, 1022551, 2045102, 4090204, 5112755, 8180408, 10225510, 16360816, 20451020, 40902040, 81804080]

約数ペア:

[(1, 81804080), (2, 40902040), (4, 20451020), (5, 16360816), (8, 10225510), (10, 8180408), (16, 5112755), (20, 4090204), (40, 2045102), (80, 1022551), (797, 102640), (1283, 63760), (1594, 51320), (2566, 31880), (3188, 25660), (3985, 20528), (5132, 15940), (6376, 12830), (6415, 12752), (7970, 10264)]