18191988

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 48642048

約数和(自身を除く): 30450060

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 127, 138, 173, 207, 254, 276, 346, 381, 414, 508, 519, 692, 762, 828, 1038, 1143, 1524, 1557, 2076, 2286, 2921, 3114, 3979, 4572, 5842, 6228, 7958, 8763, 11684, 11937, 15916, 17526, 21971, 23874, 26289, 35052, 35811, 43942, 47748, 52578, 65913, 71622, 87884, 105156, 131826, 143244, 197739, 263652, 395478, 505333, 790956, 1010666, 1515999, 2021332, 3031998, 4547997, 6063996, 9095994, 18191988]

約数ペア:

[(1, 18191988), (2, 9095994), (3, 6063996), (4, 4547997), (6, 3031998), (9, 2021332), (12, 1515999), (18, 1010666), (23, 790956), (36, 505333), (46, 395478), (69, 263652), (92, 197739), (127, 143244), (138, 131826), (173, 105156), (207, 87884), (254, 71622), (276, 65913), (346, 52578), (381, 47748), (414, 43942), (508, 35811), (519, 35052), (692, 26289), (762, 23874), (828, 21971), (1038, 17526), (1143, 15916), (1524, 11937), (1557, 11684), (2076, 8763), (2286, 7958), (2921, 6228), (3114, 5842), (3979, 4572)]