28273815

素因数分解:

$3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2389}}^1$

素因数の和:2663

約数の個数: 24

約数和(自身を含む): 49214880

約数和(自身を除く): 20941065

約数列:

[1, 3, 5, 9, 15, 45, 263, 789, 1315, 2367, 2389, 3945, 7167, 11835, 11945, 21501, 35835, 107505, 628307, 1884921, 3141535, 5654763, 9424605, 28273815]

約数ペア:

[(1, 28273815), (3, 9424605), (5, 5654763), (9, 3141535), (15, 1884921), (45, 628307), (263, 107505), (789, 35835), (1315, 21501), (2367, 11945), (2389, 11835), (3945, 7167)]