21311962

素因数分解:

$2^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:731

約数の個数: 32

約数和(自身を含む): 38131200

約数和(自身を除く): 16819238

約数列:

[1, 2, 7, 14, 47, 49, 94, 98, 329, 343, 658, 661, 686, 1322, 2303, 4606, 4627, 9254, 16121, 31067, 32242, 32389, 62134, 64778, 217469, 226723, 434938, 453446, 1522283, 3044566, 10655981, 21311962]

約数ペア:

[(1, 21311962), (2, 10655981), (7, 3044566), (14, 1522283), (47, 453446), (49, 434938), (94, 226723), (98, 217469), (329, 64778), (343, 62134), (658, 32389), (661, 32242), (686, 31067), (1322, 16121), (2303, 9254), (4606, 4627)]