28178860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1237}}^1$

素因数の和:1330

約数の個数: 48

約数和(自身を含む): 63643104

約数和(自身を除く): 35464244

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 1139, 1237, 1340, 2278, 2474, 4556, 4948, 5695, 6185, 11390, 12370, 21029, 22780, 24740, 42058, 82879, 84116, 105145, 165758, 210290, 331516, 414395, 420580, 828790, 1408943, 1657580, 2817886, 5635772, 7044715, 14089430, 28178860]

約数ペア:

[(1, 28178860), (2, 14089430), (4, 7044715), (5, 5635772), (10, 2817886), (17, 1657580), (20, 1408943), (34, 828790), (67, 420580), (68, 414395), (85, 331516), (134, 210290), (170, 165758), (268, 105145), (335, 84116), (340, 82879), (670, 42058), (1139, 24740), (1237, 22780), (1340, 21029), (2278, 12370), (2474, 11390), (4556, 6185), (4948, 5695)]