18251289

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1373}}^1$

素因数の和:1597

約数の個数: 24

約数和(自身を含む): 30293952

約数和(自身を除く): 12042663

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 1373, 1477, 1899, 4119, 4431, 9611, 12357, 13293, 28833, 86499, 289703, 869109, 2027921, 2607327, 6083763, 18251289]

約数ペア:

[(1, 18251289), (3, 6083763), (7, 2607327), (9, 2027921), (21, 869109), (63, 289703), (211, 86499), (633, 28833), (1373, 13293), (1477, 12357), (1899, 9611), (4119, 4431)]