20995821

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10099}}^1$

素因数の和:10126

約数の個数: 32

約数和(自身を含む): 38784000

約数和(自身を除く): 17788179

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10099, 30297, 70693, 90891, 111089, 212079, 272673, 333267, 636237, 777623, 999801, 1908711, 2332869, 2999403, 6998607, 20995821]

約数ペア:

[(1, 20995821), (3, 6998607), (7, 2999403), (9, 2332869), (11, 1908711), (21, 999801), (27, 777623), (33, 636237), (63, 333267), (77, 272673), (99, 212079), (189, 111089), (231, 90891), (297, 70693), (693, 30297), (2079, 10099)]