21511477

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 5099723

約数列:

[1, 13, 17, 19, 47, 109, 221, 247, 323, 611, 799, 893, 1417, 1853, 2071, 4199, 5123, 10387, 11609, 15181, 24089, 26923, 35207, 66599, 87091, 97337, 197353, 457691, 1132183, 1265381, 1654729, 21511477]

約数ペア:

[(1, 21511477), (13, 1654729), (17, 1265381), (19, 1132183), (47, 457691), (109, 197353), (221, 97337), (247, 87091), (323, 66599), (611, 35207), (799, 26923), (893, 24089), (1417, 15181), (1853, 11609), (2071, 10387), (4199, 5123)]