557140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 1186920

約数和(自身を除く): 629780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 313, 356, 445, 626, 890, 1252, 1565, 1780, 3130, 6260, 27857, 55714, 111428, 139285, 278570, 557140]

約数ペア:

[(1, 557140), (2, 278570), (4, 139285), (5, 111428), (10, 55714), (20, 27857), (89, 6260), (178, 3130), (313, 1780), (356, 1565), (445, 1252), (626, 890)]