16993431

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{20749}}^1$

素因数の和:20775

約数の個数: 24

約数和(自身を含む): 30212000

約数和(自身を除く): 13218569

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 20749, 62247, 145243, 186741, 269737, 435729, 809211, 1307187, 1888159, 2427633, 5664477, 16993431]

約数ペア:

[(1, 16993431), (3, 5664477), (7, 2427633), (9, 1888159), (13, 1307187), (21, 809211), (39, 435729), (63, 269737), (91, 186741), (117, 145243), (273, 62247), (819, 20749)]