217428172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{229}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 447644400

約数和(自身を除く): 230216228

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 52, 62, 76, 124, 229, 247, 403, 458, 494, 589, 806, 916, 961, 988, 1178, 1612, 1922, 2356, 2977, 3844, 4351, 5954, 7099, 7657, 8702, 11908, 12493, 14198, 15314, 17404, 18259, 24986, 28396, 30628, 36518, 49972, 56563, 73036, 92287, 113126, 134881, 184574, 220069, 226252, 237367, 269762, 369148, 440138, 474734, 539524, 880276, 949468, 1753453, 2860897, 3506906, 4181311, 5721794, 7013812, 8362622, 11443588, 16725244, 54357043, 108714086, 217428172]

約数ペア:

[(1, 217428172), (2, 108714086), (4, 54357043), (13, 16725244), (19, 11443588), (26, 8362622), (31, 7013812), (38, 5721794), (52, 4181311), (62, 3506906), (76, 2860897), (124, 1753453), (229, 949468), (247, 880276), (403, 539524), (458, 474734), (494, 440138), (589, 369148), (806, 269762), (916, 237367), (961, 226252), (988, 220069), (1178, 184574), (1612, 134881), (1922, 113126), (2356, 92287), (2977, 73036), (3844, 56563), (4351, 49972), (5954, 36518), (7099, 30628), (7657, 28396), (8702, 24986), (11908, 18259), (12493, 17404), (14198, 15314)]