21838201

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 30643200

約数和(自身を除く): 8804999

約数列:

[1, 7, 11, 19, 23, 59, 77, 121, 133, 161, 209, 253, 413, 437, 649, 847, 1121, 1357, 1463, 1771, 2299, 2783, 3059, 4543, 4807, 7139, 7847, 9499, 12331, 14927, 16093, 19481, 25783, 33649, 49973, 52877, 86317, 104489, 135641, 164197, 180481, 283613, 370139, 949487, 1149379, 1985291, 3119743, 21838201]

約数ペア:

[(1, 21838201), (7, 3119743), (11, 1985291), (19, 1149379), (23, 949487), (59, 370139), (77, 283613), (121, 180481), (133, 164197), (161, 135641), (209, 104489), (253, 86317), (413, 52877), (437, 49973), (649, 33649), (847, 25783), (1121, 19481), (1357, 16093), (1463, 14927), (1771, 12331), (2299, 9499), (2783, 7847), (3059, 7139), (4543, 4807)]