21693105

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4051}}^1$

素因数の和:4086

約数の個数: 48

約数和(自身を含む): 45512064

約数和(自身を除く): 23818959

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 4051, 5355, 12153, 20255, 28357, 36459, 60765, 68867, 85071, 141785, 182295, 206601, 255213, 344335, 425355, 482069, 619803, 1033005, 1276065, 1446207, 2410345, 3099015, 4338621, 7231035, 21693105]

約数ペア:

[(1, 21693105), (3, 7231035), (5, 4338621), (7, 3099015), (9, 2410345), (15, 1446207), (17, 1276065), (21, 1033005), (35, 619803), (45, 482069), (51, 425355), (63, 344335), (85, 255213), (105, 206601), (119, 182295), (153, 141785), (255, 85071), (315, 68867), (357, 60765), (595, 36459), (765, 28357), (1071, 20255), (1785, 12153), (4051, 5355)]