21298864

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18749}}^1$

素因数の和:18828

約数の個数: 20

約数和(自身を含む): 41850000

約数和(自身を除く): 20551136

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18749, 37498, 74996, 149992, 299984, 1331179, 2662358, 5324716, 10649432, 21298864]

約数ペア:

[(1, 21298864), (2, 10649432), (4, 5324716), (8, 2662358), (16, 1331179), (71, 299984), (142, 149992), (284, 74996), (568, 37498), (1136, 18749)]