20154805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11821}}^1$

素因数の和:11868

約数の個数: 16

約数和(自身を含む): 27237888

約数和(自身を除く): 7083083

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11821, 59105, 130031, 366451, 650155, 1832255, 4030961, 20154805]

約数ペア:

[(1, 20154805), (5, 4030961), (11, 1832255), (31, 650155), (55, 366451), (155, 130031), (341, 59105), (1705, 11821)]