20998845

素因数分解:

$3^6\times 5^1\times 7^1\times {\mathrm{823}}^1$

素因数の和:853

約数の個数: 56

約数和(自身を含む): 43230336

約数和(自身を除く): 22231491

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 729, 823, 945, 1215, 1701, 2469, 2835, 3645, 4115, 5103, 5761, 7407, 8505, 12345, 17283, 22221, 25515, 28805, 37035, 51849, 66663, 86415, 111105, 155547, 199989, 259245, 333315, 466641, 599967, 777735, 999945, 1399923, 2333205, 2999835, 4199769, 6999615, 20998845]

約数ペア:

[(1, 20998845), (3, 6999615), (5, 4199769), (7, 2999835), (9, 2333205), (15, 1399923), (21, 999945), (27, 777735), (35, 599967), (45, 466641), (63, 333315), (81, 259245), (105, 199989), (135, 155547), (189, 111105), (243, 86415), (315, 66663), (405, 51849), (567, 37035), (729, 28805), (823, 25515), (945, 22221), (1215, 17283), (1701, 12345), (2469, 8505), (2835, 7407), (3645, 5761), (4115, 5103)]