21134745

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1301}}^1$

素因数の和:1350

約数の個数: 36

約数和(自身を含む): 38692836

約数和(自身を除く): 17558091

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 361, 855, 1083, 1301, 1805, 3249, 3903, 5415, 6505, 11709, 16245, 19515, 24719, 58545, 74157, 123595, 222471, 370785, 469661, 1112355, 1408983, 2348305, 4226949, 7044915, 21134745]

約数ペア:

[(1, 21134745), (3, 7044915), (5, 4226949), (9, 2348305), (15, 1408983), (19, 1112355), (45, 469661), (57, 370785), (95, 222471), (171, 123595), (285, 74157), (361, 58545), (855, 24719), (1083, 19515), (1301, 16245), (1805, 11709), (3249, 6505), (3903, 5415)]