289644560

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{84199}}^1$

素因数の和:84255

約数の個数: 40

約数和(自身を含む): 689092800

約数和(自身を除く): 399448240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 84199, 168398, 336796, 420995, 673592, 841990, 1347184, 1683980, 3367960, 3620557, 6735920, 7241114, 14482228, 18102785, 28964456, 36205570, 57928912, 72411140, 144822280, 289644560]

約数ペア:

[(1, 289644560), (2, 144822280), (4, 72411140), (5, 57928912), (8, 36205570), (10, 28964456), (16, 18102785), (20, 14482228), (40, 7241114), (43, 6735920), (80, 3620557), (86, 3367960), (172, 1683980), (215, 1347184), (344, 841990), (430, 673592), (688, 420995), (860, 336796), (1720, 168398), (3440, 84199)]