20207564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 40666080

約数和(自身を除く): 20458516

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 113, 181, 226, 247, 362, 452, 494, 724, 988, 1469, 2147, 2353, 2938, 3439, 4294, 4706, 5876, 6878, 8588, 9412, 13756, 20453, 27911, 40906, 44707, 55822, 81812, 89414, 111644, 178828, 265889, 388607, 531778, 777214, 1063556, 1554428, 5051891, 10103782, 20207564]

約数ペア:

[(1, 20207564), (2, 10103782), (4, 5051891), (13, 1554428), (19, 1063556), (26, 777214), (38, 531778), (52, 388607), (76, 265889), (113, 178828), (181, 111644), (226, 89414), (247, 81812), (362, 55822), (452, 44707), (494, 40906), (724, 27911), (988, 20453), (1469, 13756), (2147, 9412), (2353, 8588), (2938, 6878), (3439, 5876), (4294, 4706)]