28018172

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 62963712

約数和(自身を除く): 34945540

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 62, 91, 124, 169, 182, 191, 217, 338, 364, 382, 403, 434, 676, 764, 806, 868, 1183, 1337, 1612, 2366, 2483, 2674, 2821, 4732, 4966, 5239, 5348, 5642, 5921, 9932, 10478, 11284, 11842, 17381, 20956, 23684, 32279, 34762, 36673, 41447, 64558, 69524, 73346, 76973, 82894, 129116, 146692, 153946, 165788, 225953, 307892, 451906, 538811, 903812, 1000649, 1077622, 2001298, 2155244, 4002596, 7004543, 14009086, 28018172]

約数ペア:

[(1, 28018172), (2, 14009086), (4, 7004543), (7, 4002596), (13, 2155244), (14, 2001298), (26, 1077622), (28, 1000649), (31, 903812), (52, 538811), (62, 451906), (91, 307892), (124, 225953), (169, 165788), (182, 153946), (191, 146692), (217, 129116), (338, 82894), (364, 76973), (382, 73346), (403, 69524), (434, 64558), (676, 41447), (764, 36673), (806, 34762), (868, 32279), (1183, 23684), (1337, 20956), (1612, 17381), (2366, 11842), (2483, 11284), (2674, 10478), (2821, 9932), (4732, 5921), (4966, 5642), (5239, 5348)]