28457325

素因数分解:

$3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 120

約数和(自身を含む): 60496128

約数和(自身を除く): 32038803

約数列:

[1, 3, 5, 9, 13, 15, 23, 25, 27, 39, 45, 47, 65, 69, 75, 81, 115, 117, 135, 141, 195, 207, 225, 235, 299, 325, 345, 351, 405, 423, 575, 585, 611, 621, 675, 705, 897, 975, 1035, 1053, 1081, 1175, 1269, 1495, 1725, 1755, 1833, 1863, 2025, 2115, 2691, 2925, 3055, 3105, 3243, 3525, 3807, 4485, 5175, 5265, 5405, 5499, 6345, 7475, 8073, 8775, 9165, 9315, 9729, 10575, 13455, 14053, 15275, 15525, 16215, 16497, 19035, 22425, 24219, 26325, 27025, 27495, 29187, 31725, 40365, 42159, 45825, 46575, 48645, 49491, 67275, 70265, 81075, 82485, 87561, 95175, 121095, 126477, 137475, 145935, 201825, 210795, 243225, 247455, 351325, 379431, 412425, 437805, 605475, 632385, 729675, 1053975, 1138293, 1237275, 1897155, 2189025, 3161925, 5691465, 9485775, 28457325]

約数ペア:

[(1, 28457325), (3, 9485775), (5, 5691465), (9, 3161925), (13, 2189025), (15, 1897155), (23, 1237275), (25, 1138293), (27, 1053975), (39, 729675), (45, 632385), (47, 605475), (65, 437805), (69, 412425), (75, 379431), (81, 351325), (115, 247455), (117, 243225), (135, 210795), (141, 201825), (195, 145935), (207, 137475), (225, 126477), (235, 121095), (299, 95175), (325, 87561), (345, 82485), (351, 81075), (405, 70265), (423, 67275), (575, 49491), (585, 48645), (611, 46575), (621, 45825), (675, 42159), (705, 40365), (897, 31725), (975, 29187), (1035, 27495), (1053, 27025), (1081, 26325), (1175, 24219), (1269, 22425), (1495, 19035), (1725, 16497), (1755, 16215), (1833, 15525), (1863, 15275), (2025, 14053), (2115, 13455), (2691, 10575), (2925, 9729), (3055, 9315), (3105, 9165), (3243, 8775), (3525, 8073), (3807, 7475), (4485, 6345), (5175, 5499), (5265, 5405)]