81465540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:306

約数の個数: 192

約数和(自身を含む): 270950400

約数和(自身を除く): 189484860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 23, 26, 30, 38, 39, 46, 52, 57, 60, 65, 69, 76, 78, 92, 95, 114, 115, 130, 138, 156, 190, 195, 228, 230, 239, 247, 260, 276, 285, 299, 345, 380, 390, 437, 460, 478, 494, 570, 598, 690, 717, 741, 780, 874, 897, 956, 988, 1140, 1195, 1196, 1235, 1311, 1380, 1434, 1482, 1495, 1748, 1794, 2185, 2390, 2470, 2622, 2868, 2964, 2990, 3107, 3585, 3588, 3705, 4370, 4485, 4541, 4780, 4940, 5244, 5497, 5681, 5980, 6214, 6555, 7170, 7410, 8740, 8970, 9082, 9321, 10994, 11362, 12428, 13110, 13623, 14340, 14820, 15535, 16491, 17043, 17940, 18164, 18642, 21988, 22705, 22724, 26220, 27246, 27485, 28405, 31070, 32982, 34086, 37284, 45410, 46605, 54492, 54970, 56810, 59033, 62140, 65964, 68115, 68172, 71461, 82455, 85215, 90820, 93210, 104443, 109940, 113620, 118066, 136230, 142922, 164910, 170430, 177099, 186420, 208886, 214383, 236132, 272460, 285844, 295165, 313329, 329820, 340860, 354198, 357305, 417772, 428766, 522215, 590330, 626658, 708396, 714610, 857532, 885495, 1044430, 1071915, 1180660, 1253316, 1357759, 1429220, 1566645, 1770990, 2088860, 2143830, 2715518, 3133290, 3541980, 4073277, 4287660, 5431036, 6266580, 6788795, 8146554, 13577590, 16293108, 20366385, 27155180, 40732770, 81465540]

約数ペア:

[(1, 81465540), (2, 40732770), (3, 27155180), (4, 20366385), (5, 16293108), (6, 13577590), (10, 8146554), (12, 6788795), (13, 6266580), (15, 5431036), (19, 4287660), (20, 4073277), (23, 3541980), (26, 3133290), (30, 2715518), (38, 2143830), (39, 2088860), (46, 1770990), (52, 1566645), (57, 1429220), (60, 1357759), (65, 1253316), (69, 1180660), (76, 1071915), (78, 1044430), (92, 885495), (95, 857532), (114, 714610), (115, 708396), (130, 626658), (138, 590330), (156, 522215), (190, 428766), (195, 417772), (228, 357305), (230, 354198), (239, 340860), (247, 329820), (260, 313329), (276, 295165), (285, 285844), (299, 272460), (345, 236132), (380, 214383), (390, 208886), (437, 186420), (460, 177099), (478, 170430), (494, 164910), (570, 142922), (598, 136230), (690, 118066), (717, 113620), (741, 109940), (780, 104443), (874, 93210), (897, 90820), (956, 85215), (988, 82455), (1140, 71461), (1195, 68172), (1196, 68115), (1235, 65964), (1311, 62140), (1380, 59033), (1434, 56810), (1482, 54970), (1495, 54492), (1748, 46605), (1794, 45410), (2185, 37284), (2390, 34086), (2470, 32982), (2622, 31070), (2868, 28405), (2964, 27485), (2990, 27246), (3107, 26220), (3585, 22724), (3588, 22705), (3705, 21988), (4370, 18642), (4485, 18164), (4541, 17940), (4780, 17043), (4940, 16491), (5244, 15535), (5497, 14820), (5681, 14340), (5980, 13623), (6214, 13110), (6555, 12428), (7170, 11362), (7410, 10994), (8740, 9321), (8970, 9082)]