20180405

素因数分解:

$5^1\times 7^4\times {\mathrm{41}}^2$

素因数の和:115

約数の個数: 30

約数和(自身を含む): 28956738

約数和(自身を除く): 8776333

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 343, 1435, 1681, 1715, 2009, 2401, 8405, 10045, 11767, 12005, 14063, 58835, 70315, 82369, 98441, 411845, 492205, 576583, 2882915, 4036081, 20180405]

約数ペア:

[(1, 20180405), (5, 4036081), (7, 2882915), (35, 576583), (41, 492205), (49, 411845), (205, 98441), (245, 82369), (287, 70315), (343, 58835), (1435, 14063), (1681, 12005), (1715, 11767), (2009, 10045), (2401, 8405)]