28778080

素因数分解:

$2^5\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1373}}^1$

素因数の和:1519

約数の個数: 48

約数和(自身を含む): 68557104

約数和(自身を除く): 39779024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 131, 160, 262, 524, 655, 1048, 1310, 1373, 2096, 2620, 2746, 4192, 5240, 5492, 6865, 10480, 10984, 13730, 20960, 21968, 27460, 43936, 54920, 109840, 179863, 219680, 359726, 719452, 899315, 1438904, 1798630, 2877808, 3597260, 5755616, 7194520, 14389040, 28778080]

約数ペア:

[(1, 28778080), (2, 14389040), (4, 7194520), (5, 5755616), (8, 3597260), (10, 2877808), (16, 1798630), (20, 1438904), (32, 899315), (40, 719452), (80, 359726), (131, 219680), (160, 179863), (262, 109840), (524, 54920), (655, 43936), (1048, 27460), (1310, 21968), (1373, 20960), (2096, 13730), (2620, 10984), (2746, 10480), (4192, 6865), (5240, 5492)]