20171855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11831}}^1$

素因数の和:11878

約数の個数: 16

約数和(自身を含む): 27260928

約数和(自身を除く): 7089073

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11831, 59155, 130141, 366761, 650705, 1833805, 4034371, 20171855]

約数ペア:

[(1, 20171855), (5, 4034371), (11, 1833805), (31, 650705), (55, 366761), (155, 130141), (341, 59155), (1705, 11831)]