258740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{761}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 576072

約数和(自身を除く): 317332

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 761, 1522, 3044, 3805, 7610, 12937, 15220, 25874, 51748, 64685, 129370, 258740]

約数ペア:

[(1, 258740), (2, 129370), (4, 64685), (5, 51748), (10, 25874), (17, 15220), (20, 12937), (34, 7610), (68, 3805), (85, 3044), (170, 1522), (340, 761)]