21259840

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9491}}^1$

素因数の和:9515

約数の個数: 56

約数和(自身を含む): 57863232

約数和(自身を除く): 36603392

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 9491, 18982, 37964, 47455, 66437, 75928, 94910, 132874, 151856, 189820, 265748, 303712, 332185, 379640, 531496, 607424, 664370, 759280, 1062992, 1328740, 1518560, 2125984, 2657480, 3037120, 4251968, 5314960, 10629920, 21259840]

約数ペア:

[(1, 21259840), (2, 10629920), (4, 5314960), (5, 4251968), (7, 3037120), (8, 2657480), (10, 2125984), (14, 1518560), (16, 1328740), (20, 1062992), (28, 759280), (32, 664370), (35, 607424), (40, 531496), (56, 379640), (64, 332185), (70, 303712), (80, 265748), (112, 189820), (140, 151856), (160, 132874), (224, 94910), (280, 75928), (320, 66437), (448, 47455), (560, 37964), (1120, 18982), (2240, 9491)]