19856991

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1283}}^1$

素因数の和:1371

約数の個数: 32

約数和(自身を含む): 33527808

約数和(自身を除く): 13670817

約数列:

[1, 3, 7, 11, 21, 33, 67, 77, 201, 231, 469, 737, 1283, 1407, 2211, 3849, 5159, 8981, 14113, 15477, 26943, 42339, 85961, 98791, 257883, 296373, 601727, 945571, 1805181, 2836713, 6618997, 19856991]

約数ペア:

[(1, 19856991), (3, 6618997), (7, 2836713), (11, 1805181), (21, 945571), (33, 601727), (67, 296373), (77, 257883), (201, 98791), (231, 85961), (469, 42339), (737, 26943), (1283, 15477), (1407, 14113), (2211, 8981), (3849, 5159)]