21977053

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1109}}^1$

素因数の和:1284

約数の個数: 16

約数和(自身を含む): 26640000

約数和(自身を除く): 4662947

約数列:

[1, 7, 19, 133, 149, 1043, 1109, 2831, 7763, 19817, 21071, 147497, 165241, 1156687, 3139579, 21977053]

約数ペア:

[(1, 21977053), (7, 3139579), (19, 1156687), (133, 165241), (149, 147497), (1043, 21071), (1109, 19817), (2831, 7763)]