18243729

素因数分解:

$3^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1009}}^1$

素因数の和:1070

約数の個数: 36

約数和(自身を含む): 31433220

約数和(自身を除く): 13189491

約数列:

[1, 3, 7, 9, 21, 41, 49, 63, 123, 147, 287, 369, 441, 861, 1009, 2009, 2583, 3027, 6027, 7063, 9081, 18081, 21189, 41369, 49441, 63567, 124107, 148323, 289583, 372321, 444969, 868749, 2027081, 2606247, 6081243, 18243729]

約数ペア:

[(1, 18243729), (3, 6081243), (7, 2606247), (9, 2027081), (21, 868749), (41, 444969), (49, 372321), (63, 289583), (123, 148323), (147, 124107), (287, 63567), (369, 49441), (441, 41369), (861, 21189), (1009, 18081), (2009, 9081), (2583, 7063), (3027, 6027)]