81977168

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:173

約数の個数: 120

約数和(自身を含む): 202594176

約数和(自身を除く): 120617008

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 61, 71, 91, 104, 112, 122, 142, 169, 182, 208, 244, 284, 338, 364, 427, 488, 497, 568, 676, 728, 793, 854, 923, 976, 994, 1136, 1183, 1352, 1456, 1586, 1708, 1846, 1988, 2366, 2704, 3172, 3416, 3692, 3976, 4331, 4732, 5551, 6344, 6461, 6832, 7384, 7952, 8662, 9464, 10309, 11102, 11999, 12688, 12922, 14768, 17324, 18928, 20618, 22204, 23998, 25844, 30317, 34648, 41236, 44408, 47996, 51688, 56303, 60634, 69296, 72163, 82472, 83993, 88816, 95992, 103376, 112606, 121268, 144326, 164944, 167986, 191984, 225212, 242536, 288652, 335972, 394121, 450424, 485072, 577304, 671944, 731939, 788242, 900848, 1154608, 1343888, 1463878, 1576484, 2927756, 3152968, 5123573, 5855512, 6305936, 10247146, 11711024, 20494292, 40988584, 81977168]

約数ペア:

[(1, 81977168), (2, 40988584), (4, 20494292), (7, 11711024), (8, 10247146), (13, 6305936), (14, 5855512), (16, 5123573), (26, 3152968), (28, 2927756), (52, 1576484), (56, 1463878), (61, 1343888), (71, 1154608), (91, 900848), (104, 788242), (112, 731939), (122, 671944), (142, 577304), (169, 485072), (182, 450424), (208, 394121), (244, 335972), (284, 288652), (338, 242536), (364, 225212), (427, 191984), (488, 167986), (497, 164944), (568, 144326), (676, 121268), (728, 112606), (793, 103376), (854, 95992), (923, 88816), (976, 83993), (994, 82472), (1136, 72163), (1183, 69296), (1352, 60634), (1456, 56303), (1586, 51688), (1708, 47996), (1846, 44408), (1988, 41236), (2366, 34648), (2704, 30317), (3172, 25844), (3416, 23998), (3692, 22204), (3976, 20618), (4331, 18928), (4732, 17324), (5551, 14768), (6344, 12922), (6461, 12688), (6832, 11999), (7384, 11102), (7952, 10309), (8662, 9464)]