2005658320

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{317351}}^1$

素因数の和:317443

約数の個数: 40

約数和(自身を含む): 4722197760

約数和(自身を除く): 2716539440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 317351, 634702, 1269404, 1586755, 2538808, 3173510, 5077616, 6347020, 12694040, 25070729, 25388080, 50141458, 100282916, 125353645, 200565832, 250707290, 401131664, 501414580, 1002829160, 2005658320]

約数ペア:

[(1, 2005658320), (2, 1002829160), (4, 501414580), (5, 401131664), (8, 250707290), (10, 200565832), (16, 125353645), (20, 100282916), (40, 50141458), (79, 25388080), (80, 25070729), (158, 12694040), (316, 6347020), (395, 5077616), (632, 3173510), (790, 2538808), (1264, 1586755), (1580, 1269404), (3160, 634702), (6320, 317351)]