18398121

素因数分解:

$3^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{2081}}^1$

素因数の和:2512

約数の個数: 16

約数和(自身を含む): 28115328

約数和(自身を除く): 9717207

約数列:

[1, 3, 7, 21, 421, 1263, 2081, 2947, 6243, 8841, 14567, 43701, 876101, 2628303, 6132707, 18398121]

約数ペア:

[(1, 18398121), (3, 6132707), (7, 2628303), (21, 876101), (421, 43701), (1263, 14567), (2081, 8841), (2947, 6243)]