21293120

素因数分解:

$2^6\times 5^1\times {\mathrm{66541}}^1$

素因数の和:66558

約数の個数: 28

約数和(自身を含む): 50705004

約数和(自身を除く): 29411884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66541, 133082, 266164, 332705, 532328, 665410, 1064656, 1330820, 2129312, 2661640, 4258624, 5323280, 10646560, 21293120]

約数ペア:

[(1, 21293120), (2, 10646560), (4, 5323280), (5, 4258624), (8, 2661640), (10, 2129312), (16, 1330820), (20, 1064656), (32, 665410), (40, 532328), (64, 332705), (80, 266164), (160, 133082), (320, 66541)]