81328912

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:344

約数の個数: 80

約数和(自身を含む): 187488000

約数和(自身を除く): 106159088

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 89, 112, 164, 178, 199, 287, 328, 356, 398, 574, 623, 656, 712, 796, 1148, 1246, 1393, 1424, 1592, 2296, 2492, 2786, 3184, 3649, 4592, 4984, 5572, 7298, 8159, 9968, 11144, 14596, 16318, 17711, 22288, 25543, 29192, 32636, 35422, 51086, 57113, 58384, 65272, 70844, 102172, 114226, 123977, 130544, 141688, 204344, 228452, 247954, 283376, 408688, 456904, 495908, 726151, 913808, 991816, 1452302, 1983632, 2904604, 5083057, 5809208, 10166114, 11618416, 20332228, 40664456, 81328912]

約数ペア:

[(1, 81328912), (2, 40664456), (4, 20332228), (7, 11618416), (8, 10166114), (14, 5809208), (16, 5083057), (28, 2904604), (41, 1983632), (56, 1452302), (82, 991816), (89, 913808), (112, 726151), (164, 495908), (178, 456904), (199, 408688), (287, 283376), (328, 247954), (356, 228452), (398, 204344), (574, 141688), (623, 130544), (656, 123977), (712, 114226), (796, 102172), (1148, 70844), (1246, 65272), (1393, 58384), (1424, 57113), (1592, 51086), (2296, 35422), (2492, 32636), (2786, 29192), (3184, 25543), (3649, 22288), (4592, 17711), (4984, 16318), (5572, 14596), (7298, 11144), (8159, 9968)]