81871812

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 240589440

約数和(自身を除く): 158717628

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 23, 33, 36, 44, 46, 66, 69, 89, 92, 99, 101, 132, 138, 178, 198, 202, 207, 253, 267, 276, 303, 356, 396, 404, 414, 506, 534, 606, 759, 801, 828, 909, 979, 1012, 1068, 1111, 1212, 1518, 1602, 1818, 1958, 2047, 2222, 2277, 2323, 2937, 3036, 3204, 3333, 3636, 3916, 4094, 4444, 4554, 4646, 5874, 6141, 6666, 6969, 8188, 8811, 8989, 9108, 9292, 9999, 11748, 12282, 13332, 13938, 17622, 17978, 18423, 19998, 20907, 22517, 24564, 25553, 26967, 27876, 35244, 35956, 36846, 39996, 41814, 45034, 51106, 53934, 67551, 73692, 76659, 80901, 83628, 90068, 98879, 102212, 107868, 135102, 153318, 161802, 197758, 202653, 206747, 229977, 270204, 296637, 306636, 323604, 395516, 405306, 413494, 459954, 593274, 620241, 810612, 826988, 889911, 919908, 1186548, 1240482, 1779822, 1860723, 2274217, 2480964, 3559644, 3721446, 4548434, 6822651, 7442892, 9096868, 13645302, 20467953, 27290604, 40935906, 81871812]

約数ペア:

[(1, 81871812), (2, 40935906), (3, 27290604), (4, 20467953), (6, 13645302), (9, 9096868), (11, 7442892), (12, 6822651), (18, 4548434), (22, 3721446), (23, 3559644), (33, 2480964), (36, 2274217), (44, 1860723), (46, 1779822), (66, 1240482), (69, 1186548), (89, 919908), (92, 889911), (99, 826988), (101, 810612), (132, 620241), (138, 593274), (178, 459954), (198, 413494), (202, 405306), (207, 395516), (253, 323604), (267, 306636), (276, 296637), (303, 270204), (356, 229977), (396, 206747), (404, 202653), (414, 197758), (506, 161802), (534, 153318), (606, 135102), (759, 107868), (801, 102212), (828, 98879), (909, 90068), (979, 83628), (1012, 80901), (1068, 76659), (1111, 73692), (1212, 67551), (1518, 53934), (1602, 51106), (1818, 45034), (1958, 41814), (2047, 39996), (2222, 36846), (2277, 35956), (2323, 35244), (2937, 27876), (3036, 26967), (3204, 25553), (3333, 24564), (3636, 22517), (3916, 20907), (4094, 19998), (4444, 18423), (4554, 17978), (4646, 17622), (5874, 13938), (6141, 13332), (6666, 12282), (6969, 11748), (8188, 9999), (8811, 9292), (8989, 9108)]