21000322585

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^2\times {\mathrm{18773}}^1$

素因数の和:18886

約数の個数: 36

約数和(自身を含む): 28360267236

約数和(自身を除く): 7359944651

約数列:

[1, 5, 11, 43, 55, 121, 215, 473, 605, 1849, 2365, 5203, 9245, 18773, 20339, 26015, 93865, 101695, 206503, 223729, 807239, 1032515, 1118645, 2271533, 4036195, 8879629, 11357665, 34711277, 44398145, 97675919, 173556385, 381824047, 488379595, 1909120235, 4200064517, 21000322585]

約数ペア:

[(1, 21000322585), (5, 4200064517), (11, 1909120235), (43, 488379595), (55, 381824047), (121, 173556385), (215, 97675919), (473, 44398145), (605, 34711277), (1849, 11357665), (2365, 8879629), (5203, 4036195), (9245, 2271533), (18773, 1118645), (20339, 1032515), (26015, 807239), (93865, 223729), (101695, 206503)]