21508701201

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{658907}}^1$

素因数の和:658963

約数の個数: 40

約数和(自身を含む): 35718084864

約数和(自身を除く): 14209383663

約数列:

[1, 3, 9, 13, 27, 31, 39, 81, 93, 117, 279, 351, 403, 837, 1053, 1209, 2511, 3627, 10881, 32643, 658907, 1976721, 5930163, 8565791, 17790489, 20426117, 25697373, 53371467, 61278351, 77092119, 183835053, 231276357, 265539521, 551505159, 693829071, 796618563, 1654515477, 2389855689, 7169567067, 21508701201]

約数ペア:

[(1, 21508701201), (3, 7169567067), (9, 2389855689), (13, 1654515477), (27, 796618563), (31, 693829071), (39, 551505159), (81, 265539521), (93, 231276357), (117, 183835053), (279, 77092119), (351, 61278351), (403, 53371467), (837, 25697373), (1053, 20426117), (1209, 17790489), (2511, 8565791), (3627, 5930163), (10881, 1976721), (32643, 658907)]