420560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{751}}^1$

素因数の和:771

約数の個数: 40

約数和(自身を含む): 1118976

約数和(自身を除く): 698416

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 751, 1502, 3004, 3755, 5257, 6008, 7510, 10514, 12016, 15020, 21028, 26285, 30040, 42056, 52570, 60080, 84112, 105140, 210280, 420560]

約数ペア:

[(1, 420560), (2, 210280), (4, 105140), (5, 84112), (7, 60080), (8, 52570), (10, 42056), (14, 30040), (16, 26285), (20, 21028), (28, 15020), (35, 12016), (40, 10514), (56, 7510), (70, 6008), (80, 5257), (112, 3755), (140, 3004), (280, 1502), (560, 751)]