21247902

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{90803}}^1$

素因数の和:90824

約数の個数: 24

約数和(自身を含む): 49578984

約数和(自身を除く): 28331082

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 90803, 181606, 272409, 544818, 817227, 1180439, 1634454, 2360878, 3541317, 7082634, 10623951, 21247902]

約数ペア:

[(1, 21247902), (2, 10623951), (3, 7082634), (6, 3541317), (9, 2360878), (13, 1634454), (18, 1180439), (26, 817227), (39, 544818), (78, 272409), (117, 181606), (234, 90803)]