21206706

素因数分解:

$2^1\times 3^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{743}}^1$

素因数の和:886

約数の個数: 32

約数和(自身を含む): 43711488

約数和(自身を除く): 22504782

約数列:

[1, 2, 3, 6, 67, 71, 134, 142, 201, 213, 402, 426, 743, 1486, 2229, 4458, 4757, 9514, 14271, 28542, 49781, 52753, 99562, 105506, 149343, 158259, 298686, 316518, 3534451, 7068902, 10603353, 21206706]

約数ペア:

[(1, 21206706), (2, 10603353), (3, 7068902), (6, 3534451), (67, 316518), (71, 298686), (134, 158259), (142, 149343), (201, 105506), (213, 99562), (402, 52753), (426, 49781), (743, 28542), (1486, 14271), (2229, 9514), (4458, 4757)]