258889420

素因数分解:

$2^2\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{9511}}^1$

素因数の和:10881

約数の個数: 24

約数和(自身を含む): 544124448

約数和(自身を除く): 285235028

約数列:

[1, 2, 4, 5, 10, 20, 1361, 2722, 5444, 6805, 9511, 13610, 19022, 27220, 38044, 47555, 95110, 190220, 12944471, 25888942, 51777884, 64722355, 129444710, 258889420]

約数ペア:

[(1, 258889420), (2, 129444710), (4, 64722355), (5, 51777884), (10, 25888942), (20, 12944471), (1361, 190220), (2722, 95110), (5444, 47555), (6805, 38044), (9511, 27220), (13610, 19022)]