1680420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{4001}}^1$

素因数の和:4020

約数の個数: 48

約数和(自身を含む): 5378688

約数和(自身を除く): 3698268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 4001, 8002, 12003, 16004, 20005, 24006, 28007, 40010, 48012, 56014, 60015, 80020, 84021, 112028, 120030, 140035, 168042, 240060, 280070, 336084, 420105, 560140, 840210, 1680420]

約数ペア:

[(1, 1680420), (2, 840210), (3, 560140), (4, 420105), (5, 336084), (6, 280070), (7, 240060), (10, 168042), (12, 140035), (14, 120030), (15, 112028), (20, 84021), (21, 80020), (28, 60015), (30, 56014), (35, 48012), (42, 40010), (60, 28007), (70, 24006), (84, 20005), (105, 16004), (140, 12003), (210, 8002), (420, 4001)]