21027897

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{701}}^1$

素因数の和:822

約数の個数: 32

約数和(自身を含む): 34369920

約数和(自身を除く): 13342023

約数列:

[1, 3, 9, 11, 27, 33, 99, 101, 297, 303, 701, 909, 1111, 2103, 2727, 3333, 6309, 7711, 9999, 18927, 23133, 29997, 69399, 70801, 208197, 212403, 637209, 778811, 1911627, 2336433, 7009299, 21027897]

約数ペア:

[(1, 21027897), (3, 7009299), (9, 2336433), (11, 1911627), (27, 778811), (33, 637209), (99, 212403), (101, 208197), (297, 70801), (303, 69399), (701, 29997), (909, 23133), (1111, 18927), (2103, 9999), (2727, 7711), (3333, 6309)]