21172482

素因数分解:

$2^1\times 3^3\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 49230720

約数和(自身を除く): 28058238

約数列:

[1, 2, 3, 6, 9, 18, 27, 41, 54, 73, 82, 123, 131, 146, 219, 246, 262, 369, 393, 438, 657, 738, 786, 1107, 1179, 1314, 1971, 2214, 2358, 2993, 3537, 3942, 5371, 5986, 7074, 8979, 9563, 10742, 16113, 17958, 19126, 26937, 28689, 32226, 48339, 53874, 57378, 80811, 86067, 96678, 145017, 161622, 172134, 258201, 290034, 392083, 516402, 784166, 1176249, 2352498, 3528747, 7057494, 10586241, 21172482]

約数ペア:

[(1, 21172482), (2, 10586241), (3, 7057494), (6, 3528747), (9, 2352498), (18, 1176249), (27, 784166), (41, 516402), (54, 392083), (73, 290034), (82, 258201), (123, 172134), (131, 161622), (146, 145017), (219, 96678), (246, 86067), (262, 80811), (369, 57378), (393, 53874), (438, 48339), (657, 32226), (738, 28689), (786, 26937), (1107, 19126), (1179, 17958), (1314, 16113), (1971, 10742), (2214, 9563), (2358, 8979), (2993, 7074), (3537, 5986), (3942, 5371)]