21993140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84589}}^1$

素因数の和:84611

約数の個数: 24

約数和(自身を含む): 49738920

約数和(自身を除く): 27745780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84589, 169178, 338356, 422945, 845890, 1099657, 1691780, 2199314, 4398628, 5498285, 10996570, 21993140]

約数ペア:

[(1, 21993140), (2, 10996570), (4, 5498285), (5, 4398628), (10, 2199314), (13, 1691780), (20, 1099657), (26, 845890), (52, 422945), (65, 338356), (130, 169178), (260, 84589)]