21546812

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^2$

素因数の和:326

約数の個数: 36

約数和(自身を含む): 44469264

約数和(自身を除く): 22922452

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 137, 164, 274, 287, 548, 574, 959, 1148, 1918, 3836, 5617, 11234, 18769, 22468, 37538, 39319, 75076, 78638, 131383, 157276, 262766, 525532, 769529, 1539058, 3078116, 5386703, 10773406, 21546812]

約数ペア:

[(1, 21546812), (2, 10773406), (4, 5386703), (7, 3078116), (14, 1539058), (28, 769529), (41, 525532), (82, 262766), (137, 157276), (164, 131383), (274, 78638), (287, 75076), (548, 39319), (574, 37538), (959, 22468), (1148, 18769), (1918, 11234), (3836, 5617)]