28099981

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1423}}^1$

素因数の和:1481

約数の個数: 24

約数和(自身を含む): 36363264

約数和(自身を除く): 8263283

約数列:

[1, 7, 13, 31, 49, 91, 217, 403, 637, 1423, 1519, 2821, 9961, 18499, 19747, 44113, 69727, 129493, 308791, 573469, 906451, 2161537, 4014283, 28099981]

約数ペア:

[(1, 28099981), (7, 4014283), (13, 2161537), (31, 906451), (49, 573469), (91, 308791), (217, 129493), (403, 69727), (637, 44113), (1423, 19747), (1519, 18499), (2821, 9961)]