19770640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13007}}^1$

素因数の和:13039

約数の個数: 40

約数和(自身を含む): 48389760

約数和(自身を除く): 28619120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13007, 26014, 52028, 65035, 104056, 130070, 208112, 247133, 260140, 494266, 520280, 988532, 1040560, 1235665, 1977064, 2471330, 3954128, 4942660, 9885320, 19770640]

約数ペア:

[(1, 19770640), (2, 9885320), (4, 4942660), (5, 3954128), (8, 2471330), (10, 1977064), (16, 1235665), (19, 1040560), (20, 988532), (38, 520280), (40, 494266), (76, 260140), (80, 247133), (95, 208112), (152, 130070), (190, 104056), (304, 65035), (380, 52028), (760, 26014), (1520, 13007)]