21137361

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 33266688

約数和(自身を除く): 12129327

約数列:

[1, 3, 7, 21, 67, 83, 181, 201, 249, 469, 543, 581, 1267, 1407, 1743, 3801, 5561, 12127, 15023, 16683, 36381, 38927, 45069, 84889, 105161, 116781, 254667, 315483, 1006541, 3019623, 7045787, 21137361]

約数ペア:

[(1, 21137361), (3, 7045787), (7, 3019623), (21, 1006541), (67, 315483), (83, 254667), (181, 116781), (201, 105161), (249, 84889), (469, 45069), (543, 38927), (581, 36381), (1267, 16683), (1407, 15023), (1743, 12127), (3801, 5561)]