15980004

素因数分解:

$2^2\times 3^4\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:127

約数の個数: 120

約数和(自身を含む): 45317888

約数和(自身を除く): 29337884

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 31, 36, 37, 43, 54, 62, 74, 81, 86, 93, 108, 111, 124, 129, 148, 162, 172, 186, 222, 258, 279, 324, 333, 372, 387, 444, 516, 558, 666, 774, 837, 999, 1116, 1147, 1161, 1332, 1333, 1548, 1591, 1674, 1998, 2294, 2322, 2511, 2666, 2997, 3182, 3348, 3441, 3483, 3996, 3999, 4588, 4644, 4773, 5022, 5332, 5994, 6364, 6882, 6966, 7998, 9546, 10044, 10323, 11988, 11997, 13764, 13932, 14319, 15996, 19092, 20646, 23994, 28638, 30969, 35991, 41292, 42957, 47988, 49321, 57276, 61938, 71982, 85914, 92907, 98642, 107973, 123876, 128871, 143964, 147963, 171828, 185814, 197284, 215946, 257742, 295926, 371628, 431892, 443889, 515484, 591852, 887778, 1331667, 1775556, 2663334, 3995001, 5326668, 7990002, 15980004]

約数ペア:

[(1, 15980004), (2, 7990002), (3, 5326668), (4, 3995001), (6, 2663334), (9, 1775556), (12, 1331667), (18, 887778), (27, 591852), (31, 515484), (36, 443889), (37, 431892), (43, 371628), (54, 295926), (62, 257742), (74, 215946), (81, 197284), (86, 185814), (93, 171828), (108, 147963), (111, 143964), (124, 128871), (129, 123876), (148, 107973), (162, 98642), (172, 92907), (186, 85914), (222, 71982), (258, 61938), (279, 57276), (324, 49321), (333, 47988), (372, 42957), (387, 41292), (444, 35991), (516, 30969), (558, 28638), (666, 23994), (774, 20646), (837, 19092), (999, 15996), (1116, 14319), (1147, 13932), (1161, 13764), (1332, 11997), (1333, 11988), (1548, 10323), (1591, 10044), (1674, 9546), (1998, 7998), (2294, 6966), (2322, 6882), (2511, 6364), (2666, 5994), (2997, 5332), (3182, 5022), (3348, 4773), (3441, 4644), (3483, 4588), (3996, 3999)]