20484440

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17659}}^1$

素因数の和:17699

約数の個数: 32

約数和(自身を含む): 47682000

約数和(自身を除く): 27197560

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17659, 35318, 70636, 88295, 141272, 176590, 353180, 512111, 706360, 1024222, 2048444, 2560555, 4096888, 5121110, 10242220, 20484440]

約数ペア:

[(1, 20484440), (2, 10242220), (4, 5121110), (5, 4096888), (8, 2560555), (10, 2048444), (20, 1024222), (29, 706360), (40, 512111), (58, 353180), (116, 176590), (145, 141272), (232, 88295), (290, 70636), (580, 35318), (1160, 17659)]