20699700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9857}}^1$

素因数の和:9881

約数の個数: 72

約数和(自身を含む): 68453952

約数和(自身を除く): 47754252

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9857, 19714, 29571, 39428, 49285, 59142, 68999, 98570, 118284, 137998, 147855, 197140, 206997, 246425, 275996, 295710, 344995, 413994, 492850, 591420, 689990, 739275, 827988, 985700, 1034985, 1379980, 1478550, 1724975, 2069970, 2957100, 3449950, 4139940, 5174925, 6899900, 10349850, 20699700]

約数ペア:

[(1, 20699700), (2, 10349850), (3, 6899900), (4, 5174925), (5, 4139940), (6, 3449950), (7, 2957100), (10, 2069970), (12, 1724975), (14, 1478550), (15, 1379980), (20, 1034985), (21, 985700), (25, 827988), (28, 739275), (30, 689990), (35, 591420), (42, 492850), (50, 413994), (60, 344995), (70, 295710), (75, 275996), (84, 246425), (100, 206997), (105, 197140), (140, 147855), (150, 137998), (175, 118284), (210, 98570), (300, 68999), (350, 59142), (420, 49285), (525, 39428), (700, 29571), (1050, 19714), (2100, 9857)]