15246721

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:181

約数の個数: 32

約数和(自身を含む): 19584000

約数和(自身を除く): 4337279

約数列:

[1, 7, 19, 29, 59, 67, 133, 203, 413, 469, 551, 1121, 1273, 1711, 1943, 3857, 3953, 7847, 8911, 11977, 13601, 27671, 32509, 36917, 75107, 114637, 227563, 258419, 525749, 802459, 2178103, 15246721]

約数ペア:

[(1, 15246721), (7, 2178103), (19, 802459), (29, 525749), (59, 258419), (67, 227563), (133, 114637), (203, 75107), (413, 36917), (469, 32509), (551, 27671), (1121, 13601), (1273, 11977), (1711, 8911), (1943, 7847), (3857, 3953)]