21081445

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3221}}^1$

素因数の和:3261

約数の個数: 32

約数和(自身を含む): 33405696

約数和(自身を除く): 12324251

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3221, 6545, 16105, 22547, 35431, 54757, 112735, 177155, 248017, 273785, 383299, 602327, 1240085, 1916495, 3011635, 4216289, 21081445]

約数ペア:

[(1, 21081445), (5, 4216289), (7, 3011635), (11, 1916495), (17, 1240085), (35, 602327), (55, 383299), (77, 273785), (85, 248017), (119, 177155), (187, 112735), (385, 54757), (595, 35431), (935, 22547), (1309, 16105), (3221, 6545)]