21441105

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2521}}^1$

素因数の和:2548

約数の個数: 48

約数和(自身を含む): 44064384

約数和(自身を除く): 22623279

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, 2521, 2835, 7563, 8505, 12605, 17647, 22689, 37815, 52941, 68067, 88235, 113445, 158823, 204201, 264705, 340335, 476469, 612603, 794115, 1021005, 1429407, 2382345, 3063015, 4288221, 7147035, 21441105]

約数ペア:

[(1, 21441105), (3, 7147035), (5, 4288221), (7, 3063015), (9, 2382345), (15, 1429407), (21, 1021005), (27, 794115), (35, 612603), (45, 476469), (63, 340335), (81, 264705), (105, 204201), (135, 158823), (189, 113445), (243, 88235), (315, 68067), (405, 52941), (567, 37815), (945, 22689), (1215, 17647), (1701, 12605), (2521, 8505), (2835, 7563)]