28411915

素因数分解:

$5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1303}}^1$

素因数の和:1411

約数の個数: 24

約数和(自身を含む): 40137120

約数和(自身を除く): 11725205

約数列:

[1, 5, 7, 35, 49, 89, 245, 445, 623, 1303, 3115, 4361, 6515, 9121, 21805, 45605, 63847, 115967, 319235, 579835, 811769, 4058845, 5682383, 28411915]

約数ペア:

[(1, 28411915), (5, 5682383), (7, 4058845), (35, 811769), (49, 579835), (89, 319235), (245, 115967), (445, 63847), (623, 45605), (1303, 21805), (3115, 9121), (4361, 6515)]