27981695

素因数分解:

$5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{631}}^1$

素因数の和:831

約数の個数: 24

約数和(自身を含む): 39338208

約数和(自身を除く): 11356513

約数列:

[1, 5, 7, 35, 49, 181, 245, 631, 905, 1267, 3155, 4417, 6335, 8869, 22085, 30919, 44345, 114211, 154595, 571055, 799477, 3997385, 5596339, 27981695]

約数ペア:

[(1, 27981695), (5, 5596339), (7, 3997385), (35, 799477), (49, 571055), (181, 154595), (245, 114211), (631, 44345), (905, 30919), (1267, 22085), (3155, 8869), (4417, 6335)]