77996979

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 128563200

約数和(自身を除く): 50566221

約数列:

[1, 3, 9, 23, 27, 29, 61, 69, 71, 87, 183, 207, 213, 261, 549, 621, 639, 667, 783, 1403, 1633, 1647, 1769, 1917, 2001, 2059, 4209, 4331, 4899, 5307, 6003, 6177, 12627, 12993, 14697, 15921, 18009, 18531, 37881, 38979, 40687, 44091, 47357, 47763, 55593, 99613, 116937, 122061, 125599, 142071, 298839, 366183, 376797, 426213, 896517, 1098549, 1130391, 1278639, 2689551, 2888777, 3391173, 8666331, 25998993, 77996979]

約数ペア:

[(1, 77996979), (3, 25998993), (9, 8666331), (23, 3391173), (27, 2888777), (29, 2689551), (61, 1278639), (69, 1130391), (71, 1098549), (87, 896517), (183, 426213), (207, 376797), (213, 366183), (261, 298839), (549, 142071), (621, 125599), (639, 122061), (667, 116937), (783, 99613), (1403, 55593), (1633, 47763), (1647, 47357), (1769, 44091), (1917, 40687), (2001, 38979), (2059, 37881), (4209, 18531), (4331, 18009), (4899, 15921), (5307, 14697), (6003, 12993), (6177, 12627)]