51359980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5167}}^1$

素因数の和:5254

約数の個数: 48

約数和(自身を含む): 125024256

約数和(自身を除く): 73664276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 5167, 9940, 10334, 20668, 25835, 36169, 51670, 72338, 103340, 144676, 180845, 361690, 366857, 723380, 733714, 1467428, 1834285, 2567999, 3668570, 5135998, 7337140, 10271996, 12839995, 25679990, 51359980]

約数ペア:

[(1, 51359980), (2, 25679990), (4, 12839995), (5, 10271996), (7, 7337140), (10, 5135998), (14, 3668570), (20, 2567999), (28, 1834285), (35, 1467428), (70, 733714), (71, 723380), (140, 366857), (142, 361690), (284, 180845), (355, 144676), (497, 103340), (710, 72338), (994, 51670), (1420, 36169), (1988, 25835), (2485, 20668), (4970, 10334), (5167, 9940)]