639500834

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{3947}}^1$

素因数の和:4190

約数の個数: 32

約数和(自身を含む): 1118831616

約数和(自身を除く): 479330782

約数列:

[1, 2, 7, 14, 71, 142, 163, 326, 497, 994, 1141, 2282, 3947, 7894, 11573, 23146, 27629, 55258, 81011, 162022, 280237, 560474, 643361, 1286722, 1961659, 3923318, 4503527, 9007054, 45678631, 91357262, 319750417, 639500834]

約数ペア:

[(1, 639500834), (2, 319750417), (7, 91357262), (14, 45678631), (71, 9007054), (142, 4503527), (163, 3923318), (326, 1961659), (497, 1286722), (994, 643361), (1141, 560474), (2282, 280237), (3947, 162022), (7894, 81011), (11573, 55258), (23146, 27629)]