20486788

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{397}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 43684480

約数和(自身を除く): 23197692

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 97, 133, 194, 266, 388, 397, 532, 679, 794, 1358, 1588, 1843, 2716, 2779, 3686, 5558, 7372, 7543, 11116, 12901, 15086, 25802, 30172, 38509, 51604, 52801, 77018, 105602, 154036, 211204, 269563, 539126, 731671, 1078252, 1463342, 2926684, 5121697, 10243394, 20486788]

約数ペア:

[(1, 20486788), (2, 10243394), (4, 5121697), (7, 2926684), (14, 1463342), (19, 1078252), (28, 731671), (38, 539126), (76, 269563), (97, 211204), (133, 154036), (194, 105602), (266, 77018), (388, 52801), (397, 51604), (532, 38509), (679, 30172), (794, 25802), (1358, 15086), (1588, 12901), (1843, 11116), (2716, 7543), (2779, 7372), (3686, 5558)]