21272812

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{3529}}^1$

素因数の和:3681

約数の個数: 24

約数和(自身を含む): 40919760

約数和(自身を除く): 19646948

約数列:

[1, 2, 4, 11, 22, 44, 137, 274, 548, 1507, 3014, 3529, 6028, 7058, 14116, 38819, 77638, 155276, 483473, 966946, 1933892, 5318203, 10636406, 21272812]

約数ペア:

[(1, 21272812), (2, 10636406), (4, 5318203), (11, 1933892), (22, 966946), (44, 483473), (137, 155276), (274, 77638), (548, 38819), (1507, 14116), (3014, 7058), (3529, 6028)]