20807276

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 43201536

約数和(自身を除く): 22394260

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 97, 163, 188, 194, 326, 329, 388, 652, 658, 679, 1141, 1316, 1358, 2282, 2716, 4559, 4564, 7661, 9118, 15322, 15811, 18236, 30644, 31622, 31913, 53627, 63244, 63826, 107254, 110677, 127652, 214508, 221354, 442708, 743117, 1486234, 2972468, 5201819, 10403638, 20807276]

約数ペア:

[(1, 20807276), (2, 10403638), (4, 5201819), (7, 2972468), (14, 1486234), (28, 743117), (47, 442708), (94, 221354), (97, 214508), (163, 127652), (188, 110677), (194, 107254), (326, 63826), (329, 63244), (388, 53627), (652, 31913), (658, 31622), (679, 30644), (1141, 18236), (1316, 15811), (1358, 15322), (2282, 9118), (2716, 7661), (4559, 4564)]