21193641

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{5021}}^1$

素因数の和:5101

約数の個数: 24

約数和(自身を含む): 35515584

約数和(自身を除く): 14321943

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 5021, 15063, 35147, 45189, 105441, 316323, 336407, 1009221, 2354849, 3027663, 7064547, 21193641]

約数ペア:

[(1, 21193641), (3, 7064547), (7, 3027663), (9, 2354849), (21, 1009221), (63, 336407), (67, 316323), (201, 105441), (469, 45189), (603, 35147), (1407, 15063), (4221, 5021)]