18216387

素因数分解:

$3^3\times 7^4\times {\mathrm{281}}^1$

素因数の和:318

約数の個数: 40

約数和(自身を含む): 31595280

約数和(自身を除く): 13378893

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 281, 343, 441, 843, 1029, 1323, 1967, 2401, 2529, 3087, 5901, 7203, 7587, 9261, 13769, 17703, 21609, 41307, 53109, 64827, 96383, 123921, 289149, 371763, 674681, 867447, 2024043, 2602341, 6072129, 18216387]

約数ペア:

[(1, 18216387), (3, 6072129), (7, 2602341), (9, 2024043), (21, 867447), (27, 674681), (49, 371763), (63, 289149), (147, 123921), (189, 96383), (281, 64827), (343, 53109), (441, 41307), (843, 21609), (1029, 17703), (1323, 13769), (1967, 9261), (2401, 7587), (2529, 7203), (3087, 5901)]