20598320

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1307}}^1$

素因数の和:1517

約数の個数: 40

約数和(自身を含む): 48171024

約数和(自身を除く): 27572704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1307, 1576, 1970, 2614, 3152, 3940, 5228, 6535, 7880, 10456, 13070, 15760, 20912, 26140, 52280, 104560, 257479, 514958, 1029916, 1287395, 2059832, 2574790, 4119664, 5149580, 10299160, 20598320]

約数ペア:

[(1, 20598320), (2, 10299160), (4, 5149580), (5, 4119664), (8, 2574790), (10, 2059832), (16, 1287395), (20, 1029916), (40, 514958), (80, 257479), (197, 104560), (394, 52280), (788, 26140), (985, 20912), (1307, 15760), (1576, 13070), (1970, 10456), (2614, 7880), (3152, 6535), (3940, 5228)]