21178059

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{499}}^1$

素因数の和:599

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 12613941

約数列:

[1, 3, 7, 21, 43, 47, 129, 141, 301, 329, 499, 903, 987, 1497, 2021, 3493, 6063, 10479, 14147, 21457, 23453, 42441, 64371, 70359, 150199, 164171, 450597, 492513, 1008479, 3025437, 7059353, 21178059]

約数ペア:

[(1, 21178059), (3, 7059353), (7, 3025437), (21, 1008479), (43, 492513), (47, 450597), (129, 164171), (141, 150199), (301, 70359), (329, 64371), (499, 42441), (903, 23453), (987, 21457), (1497, 14147), (2021, 10479), (3493, 6063)]