81317392

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:141

約数の個数: 120

約数和(自身を含む): 189932040

約数和(自身を除く): 108614648

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 29, 34, 52, 58, 61, 68, 104, 116, 122, 136, 169, 208, 221, 232, 244, 272, 338, 377, 442, 464, 488, 493, 676, 754, 793, 884, 976, 986, 1037, 1352, 1508, 1586, 1768, 1769, 1972, 2074, 2704, 2873, 3016, 3172, 3536, 3538, 3944, 4148, 4901, 5746, 6032, 6344, 6409, 7076, 7888, 8296, 9802, 10309, 11492, 12688, 12818, 13481, 14152, 16592, 19604, 20618, 22984, 22997, 25636, 26962, 28304, 30073, 39208, 41236, 45968, 45994, 51272, 53924, 60146, 78416, 82472, 83317, 91988, 102544, 107848, 120292, 164944, 166634, 175253, 183976, 215696, 240584, 298961, 333268, 350506, 367952, 390949, 481168, 597922, 666536, 701012, 781898, 1195844, 1333072, 1402024, 1563796, 2391688, 2804048, 3127592, 4783376, 5082337, 6255184, 10164674, 20329348, 40658696, 81317392]

約数ペア:

[(1, 81317392), (2, 40658696), (4, 20329348), (8, 10164674), (13, 6255184), (16, 5082337), (17, 4783376), (26, 3127592), (29, 2804048), (34, 2391688), (52, 1563796), (58, 1402024), (61, 1333072), (68, 1195844), (104, 781898), (116, 701012), (122, 666536), (136, 597922), (169, 481168), (208, 390949), (221, 367952), (232, 350506), (244, 333268), (272, 298961), (338, 240584), (377, 215696), (442, 183976), (464, 175253), (488, 166634), (493, 164944), (676, 120292), (754, 107848), (793, 102544), (884, 91988), (976, 83317), (986, 82472), (1037, 78416), (1352, 60146), (1508, 53924), (1586, 51272), (1768, 45994), (1769, 45968), (1972, 41236), (2074, 39208), (2704, 30073), (2873, 28304), (3016, 26962), (3172, 25636), (3536, 22997), (3538, 22984), (3944, 20618), (4148, 19604), (4901, 16592), (5746, 14152), (6032, 13481), (6344, 12818), (6409, 12688), (7076, 11492), (7888, 10309), (8296, 9802)]