21166578

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:144

約数の個数: 96

約数和(自身を含む): 51891840

約数和(自身を除く): 30725262

約数列:

[1, 2, 3, 6, 9, 18, 23, 29, 41, 43, 46, 58, 69, 82, 86, 87, 123, 129, 138, 174, 207, 246, 258, 261, 369, 387, 414, 522, 667, 738, 774, 943, 989, 1189, 1247, 1334, 1763, 1886, 1978, 2001, 2378, 2494, 2829, 2967, 3526, 3567, 3741, 4002, 5289, 5658, 5934, 6003, 7134, 7482, 8487, 8901, 10578, 10701, 11223, 12006, 15867, 16974, 17802, 21402, 22446, 27347, 28681, 31734, 40549, 51127, 54694, 57362, 81098, 82041, 86043, 102254, 121647, 153381, 164082, 172086, 243294, 246123, 258129, 306762, 364941, 460143, 492246, 516258, 729882, 920286, 1175921, 2351842, 3527763, 7055526, 10583289, 21166578]

約数ペア:

[(1, 21166578), (2, 10583289), (3, 7055526), (6, 3527763), (9, 2351842), (18, 1175921), (23, 920286), (29, 729882), (41, 516258), (43, 492246), (46, 460143), (58, 364941), (69, 306762), (82, 258129), (86, 246123), (87, 243294), (123, 172086), (129, 164082), (138, 153381), (174, 121647), (207, 102254), (246, 86043), (258, 82041), (261, 81098), (369, 57362), (387, 54694), (414, 51127), (522, 40549), (667, 31734), (738, 28681), (774, 27347), (943, 22446), (989, 21402), (1189, 17802), (1247, 16974), (1334, 15867), (1763, 12006), (1886, 11223), (1978, 10701), (2001, 10578), (2378, 8901), (2494, 8487), (2829, 7482), (2967, 7134), (3526, 6003), (3567, 5934), (3741, 5658), (4002, 5289)]