20425564

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 39191040

約数和(自身を除く): 18765476

約数列:

[1, 2, 4, 23, 46, 53, 59, 71, 92, 106, 118, 142, 212, 236, 284, 1219, 1357, 1633, 2438, 2714, 3127, 3266, 3763, 4189, 4876, 5428, 6254, 6532, 7526, 8378, 12508, 15052, 16756, 71921, 86549, 96347, 143842, 173098, 192694, 222017, 287684, 346196, 385388, 444034, 888068, 5106391, 10212782, 20425564]

約数ペア:

[(1, 20425564), (2, 10212782), (4, 5106391), (23, 888068), (46, 444034), (53, 385388), (59, 346196), (71, 287684), (92, 222017), (106, 192694), (118, 173098), (142, 143842), (212, 96347), (236, 86549), (284, 71921), (1219, 16756), (1357, 15052), (1633, 12508), (2438, 8378), (2714, 7526), (3127, 6532), (3266, 6254), (3763, 5428), (4189, 4876)]