21866103

素因数分解:

$3^2\times 7^2\times {\mathrm{179}}^1\times {\mathrm{277}}^1$

素因数の和:476

約数の個数: 36

約数和(自身を含む): 37079640

約数和(自身を除く): 15213537

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 179, 277, 441, 537, 831, 1253, 1611, 1939, 2493, 3759, 5817, 8771, 11277, 13573, 17451, 26313, 40719, 49583, 78939, 122157, 148749, 347081, 446247, 1041243, 2429567, 3123729, 7288701, 21866103]

約数ペア:

[(1, 21866103), (3, 7288701), (7, 3123729), (9, 2429567), (21, 1041243), (49, 446247), (63, 347081), (147, 148749), (179, 122157), (277, 78939), (441, 49583), (537, 40719), (831, 26313), (1253, 17451), (1611, 13573), (1939, 11277), (2493, 8771), (3759, 5817)]