21066885

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2477}}^1$

素因数の和:2504

約数の個数: 48

約数和(自身を含む): 43295616

約数和(自身を除く): 22228731

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2477, 2835, 7431, 8505, 12385, 17339, 22293, 37155, 52017, 66879, 86695, 111465, 156051, 200637, 260085, 334395, 468153, 601911, 780255, 1003185, 1404459, 2340765, 3009555, 4213377, 7022295, 21066885]

約数ペア:

[(1, 21066885), (3, 7022295), (5, 4213377), (7, 3009555), (9, 2340765), (15, 1404459), (21, 1003185), (27, 780255), (35, 601911), (45, 468153), (63, 334395), (81, 260085), (105, 200637), (135, 156051), (189, 111465), (243, 86695), (315, 66879), (405, 52017), (567, 37155), (945, 22293), (1215, 17339), (1701, 12385), (2477, 8505), (2835, 7431)]