21784983

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 11116137

約数列:

[1, 3, 11, 33, 59, 67, 167, 177, 201, 501, 649, 737, 1837, 1947, 2211, 3953, 5511, 9853, 11189, 11859, 29559, 33567, 43483, 108383, 123079, 130449, 325149, 369237, 660151, 1980453, 7261661, 21784983]

約数ペア:

[(1, 21784983), (3, 7261661), (11, 1980453), (33, 660151), (59, 369237), (67, 325149), (167, 130449), (177, 123079), (201, 108383), (501, 43483), (649, 33567), (737, 29559), (1837, 11859), (1947, 11189), (2211, 9853), (3953, 5511)]