81391128

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{449}}^1$

素因数の和:561

約数の個数: 128

約数和(自身を含む): 254016000

約数和(自身を除く): 172624872

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 83, 84, 91, 104, 156, 166, 168, 182, 249, 273, 312, 332, 364, 449, 498, 546, 581, 664, 728, 898, 996, 1079, 1092, 1162, 1347, 1743, 1796, 1992, 2158, 2184, 2324, 2694, 3143, 3237, 3486, 3592, 4316, 4648, 5388, 5837, 6286, 6474, 6972, 7553, 8632, 9429, 10776, 11674, 12572, 12948, 13944, 15106, 17511, 18858, 22659, 23348, 25144, 25896, 30212, 35022, 37267, 37716, 40859, 45318, 46696, 60424, 70044, 74534, 75432, 81718, 90636, 111801, 122577, 140088, 149068, 163436, 181272, 223602, 245154, 260869, 298136, 326872, 447204, 484471, 490308, 521738, 782607, 894408, 968942, 980616, 1043476, 1453413, 1565214, 1937884, 2086952, 2906826, 3130428, 3391297, 3875768, 5813652, 6260856, 6782594, 10173891, 11627304, 13565188, 20347782, 27130376, 40695564, 81391128]

約数ペア:

[(1, 81391128), (2, 40695564), (3, 27130376), (4, 20347782), (6, 13565188), (7, 11627304), (8, 10173891), (12, 6782594), (13, 6260856), (14, 5813652), (21, 3875768), (24, 3391297), (26, 3130428), (28, 2906826), (39, 2086952), (42, 1937884), (52, 1565214), (56, 1453413), (78, 1043476), (83, 980616), (84, 968942), (91, 894408), (104, 782607), (156, 521738), (166, 490308), (168, 484471), (182, 447204), (249, 326872), (273, 298136), (312, 260869), (332, 245154), (364, 223602), (449, 181272), (498, 163436), (546, 149068), (581, 140088), (664, 122577), (728, 111801), (898, 90636), (996, 81718), (1079, 75432), (1092, 74534), (1162, 70044), (1347, 60424), (1743, 46696), (1796, 45318), (1992, 40859), (2158, 37716), (2184, 37267), (2324, 35022), (2694, 30212), (3143, 25896), (3237, 25144), (3486, 23348), (3592, 22659), (4316, 18858), (4648, 17511), (5388, 15106), (5837, 13944), (6286, 12948), (6474, 12572), (6972, 11674), (7553, 10776), (8632, 9429)]