21208907

素因数分解:

${\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:274

約数の個数: 16

約数和(自身を含む): 22498560

約数和(自身を除く): 1289653

約数列:

[1, 59, 61, 71, 83, 3599, 4189, 4331, 4897, 5063, 5893, 255529, 298717, 347687, 359473, 21208907]

約数ペア:

[(1, 21208907), (59, 359473), (61, 347687), (71, 298717), (83, 255529), (3599, 5893), (4189, 5063), (4331, 4897)]