21278446

素因数分解:

$2^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{1213}}^1$

素因数の和:1408

約数の個数: 24

約数和(自身を含む): 37366920

約数和(自身を除く): 16088474

約数列:

[1, 2, 7, 14, 49, 98, 179, 358, 1213, 1253, 2426, 2506, 8491, 8771, 16982, 17542, 59437, 118874, 217127, 434254, 1519889, 3039778, 10639223, 21278446]

約数ペア:

[(1, 21278446), (2, 10639223), (7, 3039778), (14, 1519889), (49, 434254), (98, 217127), (179, 118874), (358, 59437), (1213, 17542), (1253, 16982), (2426, 8771), (2506, 8491)]