21865113

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:598

約数の個数: 32

約数和(自身を含む): 34108800

約数和(自身を除く): 12243687

約数列:

[1, 3, 9, 27, 37, 43, 111, 129, 333, 387, 509, 999, 1161, 1527, 1591, 4581, 4773, 13743, 14319, 18833, 21887, 42957, 56499, 65661, 169497, 196983, 508491, 590949, 809819, 2429457, 7288371, 21865113]

約数ペア:

[(1, 21865113), (3, 7288371), (9, 2429457), (27, 809819), (37, 590949), (43, 508491), (111, 196983), (129, 169497), (333, 65661), (387, 56499), (509, 42957), (999, 21887), (1161, 18833), (1527, 14319), (1591, 13743), (4581, 4773)]