21213071

素因数分解:

${\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{269}}^1$

素因数の和:454

約数の個数: 16

約数和(自身を含む): 23794560

約数和(自身を除く): 2581489

約数列:

[1, 11, 67, 107, 269, 737, 1177, 2959, 7169, 18023, 28783, 78859, 198253, 316613, 1928461, 21213071]

約数ペア:

[(1, 21213071), (11, 1928461), (67, 316613), (107, 198253), (269, 78859), (737, 28783), (1177, 18023), (2959, 7169)]