81254985

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{929}}^1$

素因数の和:975

約数の個数: 64

約数和(自身を含む): 160704000

約数和(自身を除く): 79449015

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 343, 357, 595, 735, 833, 929, 1029, 1715, 1785, 2499, 2787, 4165, 4645, 5145, 5831, 6503, 12495, 13935, 15793, 17493, 19509, 29155, 32515, 45521, 47379, 78965, 87465, 97545, 110551, 136563, 227605, 236895, 318647, 331653, 552755, 682815, 773857, 955941, 1593235, 1658265, 2321571, 3869285, 4779705, 5416999, 11607855, 16250997, 27084995, 81254985]

約数ペア:

[(1, 81254985), (3, 27084995), (5, 16250997), (7, 11607855), (15, 5416999), (17, 4779705), (21, 3869285), (35, 2321571), (49, 1658265), (51, 1593235), (85, 955941), (105, 773857), (119, 682815), (147, 552755), (245, 331653), (255, 318647), (343, 236895), (357, 227605), (595, 136563), (735, 110551), (833, 97545), (929, 87465), (1029, 78965), (1715, 47379), (1785, 45521), (2499, 32515), (2787, 29155), (4165, 19509), (4645, 17493), (5145, 15793), (5831, 13935), (6503, 12495)]