21225645

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7487}}^1$

素因数の和:7511

約数の個数: 40

約数和(自身を含む): 43490304

約数和(自身を除く): 22264659

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7487, 22461, 37435, 52409, 67383, 112305, 157227, 202149, 262045, 336915, 471681, 606447, 786135, 1010745, 1415043, 2358405, 3032235, 4245129, 7075215, 21225645]

約数ペア:

[(1, 21225645), (3, 7075215), (5, 4245129), (7, 3032235), (9, 2358405), (15, 1415043), (21, 1010745), (27, 786135), (35, 606447), (45, 471681), (63, 336915), (81, 262045), (105, 202149), (135, 157227), (189, 112305), (315, 67383), (405, 52409), (567, 37435), (945, 22461), (2835, 7487)]