20408828

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{283}}^1$

素因数の和:458

約数の個数: 36

約数和(自身を含む): 39660600

約数和(自身を除く): 19251772

約数列:

[1, 2, 4, 11, 22, 44, 121, 149, 242, 283, 298, 484, 566, 596, 1132, 1639, 3113, 3278, 6226, 6556, 12452, 18029, 34243, 36058, 42167, 68486, 72116, 84334, 136972, 168668, 463837, 927674, 1855348, 5102207, 10204414, 20408828]

約数ペア:

[(1, 20408828), (2, 10204414), (4, 5102207), (11, 1855348), (22, 927674), (44, 463837), (121, 168668), (149, 136972), (242, 84334), (283, 72116), (298, 68486), (484, 42167), (566, 36058), (596, 34243), (1132, 18029), (1639, 12452), (3113, 6556), (3278, 6226)]