1659980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 4064256

約数和(自身を除く): 2404276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 167, 284, 334, 355, 497, 668, 710, 835, 994, 1169, 1420, 1670, 1988, 2338, 2485, 3340, 4676, 4970, 5845, 9940, 11690, 11857, 23380, 23714, 47428, 59285, 82999, 118570, 165998, 237140, 331996, 414995, 829990, 1659980]

約数ペア:

[(1, 1659980), (2, 829990), (4, 414995), (5, 331996), (7, 237140), (10, 165998), (14, 118570), (20, 82999), (28, 59285), (35, 47428), (70, 23714), (71, 23380), (140, 11857), (142, 11690), (167, 9940), (284, 5845), (334, 4970), (355, 4676), (497, 3340), (668, 2485), (710, 2338), (835, 1988), (994, 1670), (1169, 1420)]