128248911

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^2\times {\mathrm{257}}^1$

素因数の和:448

約数の個数: 36

約数和(自身を含む): 214951152

約数和(自身を除く): 86702241

約数列:

[1, 3, 7, 9, 21, 63, 89, 257, 267, 623, 771, 801, 1799, 1869, 2313, 5397, 5607, 7921, 16191, 22873, 23763, 55447, 68619, 71289, 160111, 166341, 205857, 480333, 499023, 1440999, 2035697, 6107091, 14249879, 18321273, 42749637, 128248911]

約数ペア:

[(1, 128248911), (3, 42749637), (7, 18321273), (9, 14249879), (21, 6107091), (63, 2035697), (89, 1440999), (257, 499023), (267, 480333), (623, 205857), (771, 166341), (801, 160111), (1799, 71289), (1869, 68619), (2313, 55447), (5397, 23763), (5607, 22873), (7921, 16191)]