138865180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{408427}}^1$

素因数の和:408453

約数の個数: 24

約数和(自身を含む): 308771568

約数和(自身を除く): 169906388

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 408427, 816854, 1633708, 2042135, 4084270, 6943259, 8168540, 13886518, 27773036, 34716295, 69432590, 138865180]

約数ペア:

[(1, 138865180), (2, 69432590), (4, 34716295), (5, 27773036), (10, 13886518), (17, 8168540), (20, 6943259), (34, 4084270), (68, 2042135), (85, 1633708), (170, 816854), (340, 408427)]