21541471

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 25297920

約数和(自身を除く): 3756449

約数列:

[1, 7, 71, 89, 487, 497, 623, 3409, 6319, 34577, 43343, 44233, 242039, 303401, 3077353, 21541471]

約数ペア:

[(1, 21541471), (7, 3077353), (71, 303401), (89, 242039), (487, 44233), (497, 43343), (623, 34577), (3409, 6319)]