21526631

素因数分解:

$7^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:243

約数の個数: 24

約数和(自身を含む): 26046720

約数和(自身を除く): 4520089

約数列:

[1, 7, 49, 67, 79, 83, 469, 553, 581, 3283, 3871, 4067, 5293, 5561, 6557, 37051, 38927, 45899, 259357, 272489, 321293, 439319, 3075233, 21526631]

約数ペア:

[(1, 21526631), (7, 3075233), (49, 439319), (67, 321293), (79, 272489), (83, 259357), (469, 45899), (553, 38927), (581, 37051), (3283, 6557), (3871, 5561), (4067, 5293)]