21176775

素因数分解:

$3^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 39357600

約数和(自身を除く): 18180825

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 137, 225, 229, 411, 675, 685, 687, 1145, 1233, 2055, 2061, 3425, 3435, 3699, 5725, 6165, 6183, 10275, 10305, 17175, 18495, 30825, 30915, 31373, 51525, 92475, 94119, 154575, 156865, 282357, 470595, 784325, 847071, 1411785, 2352975, 4235355, 7058925, 21176775]

約数ペア:

[(1, 21176775), (3, 7058925), (5, 4235355), (9, 2352975), (15, 1411785), (25, 847071), (27, 784325), (45, 470595), (75, 282357), (135, 156865), (137, 154575), (225, 94119), (229, 92475), (411, 51525), (675, 31373), (685, 30915), (687, 30825), (1145, 18495), (1233, 17175), (2055, 10305), (2061, 10275), (3425, 6183), (3435, 6165), (3699, 5725)]