20778560

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5903}}^1$

素因数の和:5931

約数の個数: 56

約数和(自身を含む): 53986176

約数和(自身を除く): 33207616

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520, 5903, 11806, 23612, 29515, 47224, 59030, 64933, 94448, 118060, 129866, 188896, 236120, 259732, 324665, 377792, 472240, 519464, 649330, 944480, 1038928, 1298660, 1888960, 2077856, 2597320, 4155712, 5194640, 10389280, 20778560]

約数ペア:

[(1, 20778560), (2, 10389280), (4, 5194640), (5, 4155712), (8, 2597320), (10, 2077856), (11, 1888960), (16, 1298660), (20, 1038928), (22, 944480), (32, 649330), (40, 519464), (44, 472240), (55, 377792), (64, 324665), (80, 259732), (88, 236120), (110, 188896), (160, 129866), (176, 118060), (220, 94448), (320, 64933), (352, 59030), (440, 47224), (704, 29515), (880, 23612), (1760, 11806), (3520, 5903)]