21508254

素因数分解:

$2^1\times 3^4\times {\mathrm{103}}^1\times {\mathrm{1289}}^1$

素因数の和:1406

約数の個数: 40

約数和(自身を含む): 48700080

約数和(自身を除く): 27191826

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 103, 162, 206, 309, 618, 927, 1289, 1854, 2578, 2781, 3867, 5562, 7734, 8343, 11601, 16686, 23202, 34803, 69606, 104409, 132767, 208818, 265534, 398301, 796602, 1194903, 2389806, 3584709, 7169418, 10754127, 21508254]

約数ペア:

[(1, 21508254), (2, 10754127), (3, 7169418), (6, 3584709), (9, 2389806), (18, 1194903), (27, 796602), (54, 398301), (81, 265534), (103, 208818), (162, 132767), (206, 104409), (309, 69606), (618, 34803), (927, 23202), (1289, 16686), (1854, 11601), (2578, 8343), (2781, 7734), (3867, 5562)]