20175247920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{195043}}^1$

素因数の和:195490

約数の個数: 80

約数和(自身を含む): 62688701952

約数和(自身を除く): 42513454032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 431, 862, 1293, 1724, 2155, 2586, 3448, 4310, 5172, 6465, 6896, 8620, 10344, 12930, 17240, 20688, 25860, 34480, 51720, 103440, 195043, 390086, 585129, 780172, 975215, 1170258, 1560344, 1950430, 2340516, 2925645, 3120688, 3900860, 4681032, 5851290, 7801720, 9362064, 11702580, 15603440, 23405160, 46810320, 84063533, 168127066, 252190599, 336254132, 420317665, 504381198, 672508264, 840635330, 1008762396, 1260952995, 1345016528, 1681270660, 2017524792, 2521905990, 3362541320, 4035049584, 5043811980, 6725082640, 10087623960, 20175247920]

約数ペア:

[(1, 20175247920), (2, 10087623960), (3, 6725082640), (4, 5043811980), (5, 4035049584), (6, 3362541320), (8, 2521905990), (10, 2017524792), (12, 1681270660), (15, 1345016528), (16, 1260952995), (20, 1008762396), (24, 840635330), (30, 672508264), (40, 504381198), (48, 420317665), (60, 336254132), (80, 252190599), (120, 168127066), (240, 84063533), (431, 46810320), (862, 23405160), (1293, 15603440), (1724, 11702580), (2155, 9362064), (2586, 7801720), (3448, 5851290), (4310, 4681032), (5172, 3900860), (6465, 3120688), (6896, 2925645), (8620, 2340516), (10344, 1950430), (12930, 1560344), (17240, 1170258), (20688, 975215), (25860, 780172), (34480, 585129), (51720, 390086), (103440, 195043)]