18812115

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1171}}^1$

素因数の和:1209

約数の個数: 64

約数和(自身を含む): 40504320

約数和(自身を除く): 21692205

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 85, 105, 119, 135, 153, 189, 255, 315, 357, 459, 595, 765, 945, 1071, 1171, 1785, 2295, 3213, 3513, 5355, 5855, 8197, 10539, 16065, 17565, 19907, 24591, 31617, 40985, 52695, 59721, 73773, 99535, 122955, 139349, 158085, 179163, 221319, 298605, 368865, 418047, 537489, 696745, 895815, 1106595, 1254141, 2090235, 2687445, 3762423, 6270705, 18812115]

約数ペア:

[(1, 18812115), (3, 6270705), (5, 3762423), (7, 2687445), (9, 2090235), (15, 1254141), (17, 1106595), (21, 895815), (27, 696745), (35, 537489), (45, 418047), (51, 368865), (63, 298605), (85, 221319), (105, 179163), (119, 158085), (135, 139349), (153, 122955), (189, 99535), (255, 73773), (315, 59721), (357, 52695), (459, 40985), (595, 31617), (765, 24591), (945, 19907), (1071, 17565), (1171, 16065), (1785, 10539), (2295, 8197), (3213, 5855), (3513, 5355)]