20971938

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4013}}^1$

素因数の和:4098

約数の個数: 32

約数和(自身を含む): 45855936

約数和(自身を除く): 24883998

約数列:

[1, 2, 3, 6, 13, 26, 39, 67, 78, 134, 201, 402, 871, 1742, 2613, 4013, 5226, 8026, 12039, 24078, 52169, 104338, 156507, 268871, 313014, 537742, 806613, 1613226, 3495323, 6990646, 10485969, 20971938]

約数ペア:

[(1, 20971938), (2, 10485969), (3, 6990646), (6, 3495323), (13, 1613226), (26, 806613), (39, 537742), (67, 313014), (78, 268871), (134, 156507), (201, 104338), (402, 52169), (871, 24078), (1742, 12039), (2613, 8026), (4013, 5226)]