521540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:391

約数の個数: 24

約数和(自身を含む): 1111320

約数和(自身を除く): 589780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 293, 356, 445, 586, 890, 1172, 1465, 1780, 2930, 5860, 26077, 52154, 104308, 130385, 260770, 521540]

約数ペア:

[(1, 521540), (2, 260770), (4, 130385), (5, 104308), (10, 52154), (20, 26077), (89, 5860), (178, 2930), (293, 1780), (356, 1465), (445, 1172), (586, 890)]