21653438

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{4919}}^1$

素因数の和:5023

約数の個数: 16

約数和(自身を含む): 34007040

約数和(自身を除く): 12353602

約数列:

[1, 2, 31, 62, 71, 142, 2201, 4402, 4919, 9838, 152489, 304978, 349249, 698498, 10826719, 21653438]

約数ペア:

[(1, 21653438), (2, 10826719), (31, 698498), (62, 349249), (71, 304978), (142, 152489), (2201, 9838), (4402, 4919)]