20177469

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 33196800

約数和(自身を除く): 13019331

約数列:

[1, 3, 9, 13, 37, 39, 59, 79, 111, 117, 177, 237, 333, 481, 531, 711, 767, 1027, 1443, 2183, 2301, 2923, 3081, 4329, 4661, 6549, 6903, 8769, 9243, 13983, 19647, 26307, 28379, 37999, 41949, 60593, 85137, 113997, 172457, 181779, 255411, 341991, 517371, 545337, 1552113, 2241941, 6725823, 20177469]

約数ペア:

[(1, 20177469), (3, 6725823), (9, 2241941), (13, 1552113), (37, 545337), (39, 517371), (59, 341991), (79, 255411), (111, 181779), (117, 172457), (177, 113997), (237, 85137), (333, 60593), (481, 41949), (531, 37999), (711, 28379), (767, 26307), (1027, 19647), (1443, 13983), (2183, 9243), (2301, 8769), (2923, 6903), (3081, 6549), (4329, 4661)]