18969808

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{8291}}^1$

素因数の和:8323

約数の個数: 40

約数和(自身を含む): 43184736

約数和(自身を除く): 24214928

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 8291, 16582, 33164, 66328, 91201, 107783, 132656, 182402, 215566, 364804, 431132, 729608, 862264, 1185613, 1459216, 1724528, 2371226, 4742452, 9484904, 18969808]

約数ペア:

[(1, 18969808), (2, 9484904), (4, 4742452), (8, 2371226), (11, 1724528), (13, 1459216), (16, 1185613), (22, 862264), (26, 729608), (44, 431132), (52, 364804), (88, 215566), (104, 182402), (143, 132656), (176, 107783), (208, 91201), (286, 66328), (572, 33164), (1144, 16582), (2288, 8291)]