20684937

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4457}}^1$

素因数の和:4497

約数の個数: 32

約数和(自身を含む): 35949312

約数和(自身を除く): 15264375

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4457, 4641, 13371, 31199, 57941, 75769, 93597, 173823, 227307, 405587, 530383, 984997, 1216761, 1591149, 2954991, 6894979, 20684937]

約数ペア:

[(1, 20684937), (3, 6894979), (7, 2954991), (13, 1591149), (17, 1216761), (21, 984997), (39, 530383), (51, 405587), (91, 227307), (119, 173823), (221, 93597), (273, 75769), (357, 57941), (663, 31199), (1547, 13371), (4457, 4641)]