20725453

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{641}}^1$

素因数の和:828

約数の個数: 16

約数和(自身を含む): 24652800

約数和(自身を除く): 3927347

約数列:

[1, 7, 31, 149, 217, 641, 1043, 4487, 4619, 19871, 32333, 95509, 139097, 668563, 2960779, 20725453]

約数ペア:

[(1, 20725453), (7, 2960779), (31, 668563), (149, 139097), (217, 95509), (641, 32333), (1043, 19871), (4487, 4619)]