20799920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7027}}^1$

素因数の和:7077

約数の個数: 40

約数和(自身を含む): 49673904

約数和(自身を除く): 28873984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7027, 14054, 28108, 35135, 56216, 70270, 112432, 140540, 259999, 281080, 519998, 562160, 1039996, 1299995, 2079992, 2599990, 4159984, 5199980, 10399960, 20799920]

約数ペア:

[(1, 20799920), (2, 10399960), (4, 5199980), (5, 4159984), (8, 2599990), (10, 2079992), (16, 1299995), (20, 1039996), (37, 562160), (40, 519998), (74, 281080), (80, 259999), (148, 140540), (185, 112432), (296, 70270), (370, 56216), (592, 35135), (740, 28108), (1480, 14054), (2960, 7027)]