20683989

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 33633600

約数和(自身を除く): 12949611

約数列:

[1, 3, 9, 19, 29, 43, 57, 87, 97, 129, 171, 261, 291, 387, 551, 817, 873, 1247, 1653, 1843, 2451, 2813, 3741, 4171, 4959, 5529, 7353, 8439, 11223, 12513, 16587, 23693, 25317, 37539, 53447, 71079, 79249, 120959, 160341, 213237, 237747, 362877, 481023, 713241, 1088631, 2298221, 6894663, 20683989]

約数ペア:

[(1, 20683989), (3, 6894663), (9, 2298221), (19, 1088631), (29, 713241), (43, 481023), (57, 362877), (87, 237747), (97, 213237), (129, 160341), (171, 120959), (261, 79249), (291, 71079), (387, 53447), (551, 37539), (817, 25317), (873, 23693), (1247, 16587), (1653, 12513), (1843, 11223), (2451, 8439), (2813, 7353), (3741, 5529), (4171, 4959)]