20475664

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{317}}^1\times {\mathrm{367}}^1$

素因数の和:703

約数の個数: 40

約数和(自身を含む): 43532928

約数和(自身を除く): 23057264

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 317, 367, 634, 734, 1268, 1468, 2536, 2936, 3487, 4037, 5072, 5872, 6974, 8074, 13948, 16148, 27896, 32296, 55792, 64592, 116339, 232678, 465356, 930712, 1279729, 1861424, 2559458, 5118916, 10237832, 20475664]

約数ペア:

[(1, 20475664), (2, 10237832), (4, 5118916), (8, 2559458), (11, 1861424), (16, 1279729), (22, 930712), (44, 465356), (88, 232678), (176, 116339), (317, 64592), (367, 55792), (634, 32296), (734, 27896), (1268, 16148), (1468, 13948), (2536, 8074), (2936, 6974), (3487, 5872), (4037, 5072)]