21274305

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1381}}^1$

素因数の和:1481

約数の個数: 32

約数和(自身を含む): 37148160

約数和(自身を除く): 15873855

約数列:

[1, 3, 5, 13, 15, 39, 65, 79, 195, 237, 395, 1027, 1185, 1381, 3081, 4143, 5135, 6905, 15405, 17953, 20715, 53859, 89765, 109099, 269295, 327297, 545495, 1418287, 1636485, 4254861, 7091435, 21274305]

約数ペア:

[(1, 21274305), (3, 7091435), (5, 4254861), (13, 1636485), (15, 1418287), (39, 545495), (65, 327297), (79, 269295), (195, 109099), (237, 89765), (395, 53859), (1027, 20715), (1185, 17953), (1381, 15405), (3081, 6905), (4143, 5135)]