127979775

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:206

約数の個数: 144

約数和(自身を含む): 292481280

約数和(自身を除く): 164501505

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 33, 35, 45, 55, 63, 75, 77, 83, 89, 99, 105, 165, 175, 225, 231, 249, 267, 275, 315, 385, 415, 445, 495, 525, 581, 623, 693, 747, 801, 825, 913, 979, 1155, 1245, 1335, 1575, 1743, 1869, 1925, 2075, 2225, 2475, 2739, 2905, 2937, 3115, 3465, 3735, 4005, 4565, 4895, 5229, 5607, 5775, 6225, 6391, 6675, 6853, 7387, 8217, 8715, 8811, 9345, 13695, 14525, 14685, 15575, 17325, 18675, 19173, 20025, 20559, 22161, 22825, 24475, 26145, 28035, 31955, 34265, 36935, 41085, 43575, 44055, 46725, 51709, 57519, 61677, 66483, 68475, 73425, 81257, 95865, 102795, 110805, 130725, 140175, 155127, 159775, 171325, 184675, 205425, 220275, 243771, 258545, 287595, 308385, 332415, 406285, 465381, 479325, 513975, 554025, 568799, 731313, 775635, 1218855, 1292725, 1437975, 1541925, 1662075, 1706397, 2031425, 2326905, 2843995, 3656565, 3878175, 5119191, 6094275, 8531985, 11634525, 14219975, 18282825, 25595955, 42659925, 127979775]

約数ペア:

[(1, 127979775), (3, 42659925), (5, 25595955), (7, 18282825), (9, 14219975), (11, 11634525), (15, 8531985), (21, 6094275), (25, 5119191), (33, 3878175), (35, 3656565), (45, 2843995), (55, 2326905), (63, 2031425), (75, 1706397), (77, 1662075), (83, 1541925), (89, 1437975), (99, 1292725), (105, 1218855), (165, 775635), (175, 731313), (225, 568799), (231, 554025), (249, 513975), (267, 479325), (275, 465381), (315, 406285), (385, 332415), (415, 308385), (445, 287595), (495, 258545), (525, 243771), (581, 220275), (623, 205425), (693, 184675), (747, 171325), (801, 159775), (825, 155127), (913, 140175), (979, 130725), (1155, 110805), (1245, 102795), (1335, 95865), (1575, 81257), (1743, 73425), (1869, 68475), (1925, 66483), (2075, 61677), (2225, 57519), (2475, 51709), (2739, 46725), (2905, 44055), (2937, 43575), (3115, 41085), (3465, 36935), (3735, 34265), (4005, 31955), (4565, 28035), (4895, 26145), (5229, 24475), (5607, 22825), (5775, 22161), (6225, 20559), (6391, 20025), (6675, 19173), (6853, 18675), (7387, 17325), (8217, 15575), (8715, 14685), (8811, 14525), (9345, 13695)]