21499794

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16823}}^1$

素因数の和:16902

約数の個数: 24

約数和(自身を含む): 47241792

約数和(自身を除く): 25741998

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16823, 33646, 50469, 100938, 151407, 302814, 1194433, 2388866, 3583299, 7166598, 10749897, 21499794]

約数ペア:

[(1, 21499794), (2, 10749897), (3, 7166598), (6, 3583299), (9, 2388866), (18, 1194433), (71, 302814), (142, 151407), (213, 100938), (426, 50469), (639, 33646), (1278, 16823)]