18807129

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{701}}^1$

素因数の和:989

約数の個数: 24

約数和(自身を含む): 29787264

約数和(自身を除く): 10980135

約数列:

[1, 3, 9, 11, 33, 99, 271, 701, 813, 2103, 2439, 2981, 6309, 7711, 8943, 23133, 26829, 69399, 189971, 569913, 1709739, 2089681, 6269043, 18807129]

約数ペア:

[(1, 18807129), (3, 6269043), (9, 2089681), (11, 1709739), (33, 569913), (99, 189971), (271, 69399), (701, 26829), (813, 23133), (2103, 8943), (2439, 7711), (2981, 6309)]