21721102347

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1110997}}^1$

素因数の和:1111040

約数の個数: 32

約数和(自身を含む): 35551936000

約数和(自身を除く): 13830833653

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1029, 2793, 6517, 19551, 1110997, 3332991, 7776979, 21108943, 23330937, 54438853, 63326829, 147762601, 163316559, 381071971, 443287803, 1034338207, 1143215913, 3103014621, 7240367449, 21721102347]

約数ペア:

[(1, 21721102347), (3, 7240367449), (7, 3103014621), (19, 1143215913), (21, 1034338207), (49, 443287803), (57, 381071971), (133, 163316559), (147, 147762601), (343, 63326829), (399, 54438853), (931, 23330937), (1029, 21108943), (2793, 7776979), (6517, 3332991), (19551, 1110997)]