9781456

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{6869}}^1$

素因数の和:6966

約数の個数: 20

約数和(自身を含む): 19167300

約数和(自身を除く): 9385844

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 6869, 13738, 27476, 54952, 109904, 611341, 1222682, 2445364, 4890728, 9781456]

約数ペア:

[(1, 9781456), (2, 4890728), (4, 2445364), (8, 1222682), (16, 611341), (89, 109904), (178, 54952), (356, 27476), (712, 13738), (1424, 6869)]