81524240

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2971}}^1$

素因数の和:3005

約数の個数: 80

約数和(自身を含む): 221116800

約数和(自身を除く): 139592560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 2971, 3430, 3920, 5488, 5942, 6860, 11884, 13720, 14855, 20797, 23768, 27440, 29710, 41594, 47536, 59420, 83188, 103985, 118840, 145579, 166376, 207970, 237680, 291158, 332752, 415940, 582316, 727895, 831880, 1019053, 1164632, 1455790, 1663760, 2038106, 2329264, 2911580, 4076212, 5095265, 5823160, 8152424, 10190530, 11646320, 16304848, 20381060, 40762120, 81524240]

約数ペア:

[(1, 81524240), (2, 40762120), (4, 20381060), (5, 16304848), (7, 11646320), (8, 10190530), (10, 8152424), (14, 5823160), (16, 5095265), (20, 4076212), (28, 2911580), (35, 2329264), (40, 2038106), (49, 1663760), (56, 1455790), (70, 1164632), (80, 1019053), (98, 831880), (112, 727895), (140, 582316), (196, 415940), (245, 332752), (280, 291158), (343, 237680), (392, 207970), (490, 166376), (560, 145579), (686, 118840), (784, 103985), (980, 83188), (1372, 59420), (1715, 47536), (1960, 41594), (2744, 29710), (2971, 27440), (3430, 23768), (3920, 20797), (5488, 14855), (5942, 13720), (6860, 11884)]