663992

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 1451520

約数和(自身を除く): 787528

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 167, 284, 334, 497, 568, 668, 994, 1169, 1336, 1988, 2338, 3976, 4676, 9352, 11857, 23714, 47428, 82999, 94856, 165998, 331996, 663992]

約数ペア:

[(1, 663992), (2, 331996), (4, 165998), (7, 94856), (8, 82999), (14, 47428), (28, 23714), (56, 11857), (71, 9352), (142, 4676), (167, 3976), (284, 2338), (334, 1988), (497, 1336), (568, 1169), (668, 994)]