28311556

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:261

約数の個数: 72

約数和(自身を含む): 63619584

約数和(自身を除く): 35308028

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 62, 91, 124, 169, 182, 193, 217, 338, 364, 386, 403, 434, 676, 772, 806, 868, 1183, 1351, 1612, 2366, 2509, 2702, 2821, 4732, 5018, 5239, 5404, 5642, 5983, 10036, 10478, 11284, 11966, 17563, 20956, 23932, 32617, 35126, 36673, 41881, 65234, 70252, 73346, 77779, 83762, 130468, 146692, 155558, 167524, 228319, 311116, 456638, 544453, 913276, 1011127, 1088906, 2022254, 2177812, 4044508, 7077889, 14155778, 28311556]

約数ペア:

[(1, 28311556), (2, 14155778), (4, 7077889), (7, 4044508), (13, 2177812), (14, 2022254), (26, 1088906), (28, 1011127), (31, 913276), (52, 544453), (62, 456638), (91, 311116), (124, 228319), (169, 167524), (182, 155558), (193, 146692), (217, 130468), (338, 83762), (364, 77779), (386, 73346), (403, 70252), (434, 65234), (676, 41881), (772, 36673), (806, 35126), (868, 32617), (1183, 23932), (1351, 20956), (1612, 17563), (2366, 11966), (2509, 11284), (2702, 10478), (2821, 10036), (4732, 5983), (5018, 5642), (5239, 5404)]