21396418

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{2843}}^1$

素因数の和:2969

約数の個数: 16

約数和(自身を含む): 33172416

約数和(自身を除く): 11775998

約数列:

[1, 2, 53, 71, 106, 142, 2843, 3763, 5686, 7526, 150679, 201853, 301358, 403706, 10698209, 21396418]

約数ペア:

[(1, 21396418), (2, 10698209), (53, 403706), (71, 301358), (106, 201853), (142, 150679), (2843, 7526), (3763, 5686)]