21028854539

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{53309}}^1$

素因数の和:53483

約数の個数: 32

約数和(自身を含む): 27021772800

約数和(自身を除く): 5992918261

約数列:

[1, 7, 11, 47, 77, 109, 329, 517, 763, 1199, 3619, 5123, 8393, 35861, 53309, 56353, 373163, 394471, 586399, 2505523, 4104793, 5810681, 17538661, 27560753, 40674767, 63917491, 192925271, 273102007, 447422437, 1911714049, 3004122077, 21028854539]

約数ペア:

[(1, 21028854539), (7, 3004122077), (11, 1911714049), (47, 447422437), (77, 273102007), (109, 192925271), (329, 63917491), (517, 40674767), (763, 27560753), (1199, 17538661), (3619, 5810681), (5123, 4104793), (8393, 2505523), (35861, 586399), (53309, 394471), (56353, 373163)]