20338947

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{523}}^1$

素因数の和:707

約数の個数: 24

約数和(自身を含む): 30654000

約数和(自身を除く): 10315053

約数列:

[1, 3, 9, 29, 87, 149, 261, 447, 523, 1341, 1569, 4321, 4707, 12963, 15167, 38889, 45501, 77927, 136503, 233781, 701343, 2259883, 6779649, 20338947]

約数ペア:

[(1, 20338947), (3, 6779649), (9, 2259883), (29, 701343), (87, 233781), (149, 136503), (261, 77927), (447, 45501), (523, 38889), (1341, 15167), (1569, 12963), (4321, 4707)]