21135772

素因数分解:

$2^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{4999}}^1$

素因数の和:5161

約数の個数: 24

約数和(自身を含む): 42560000

約数和(自身を除く): 21424228

約数列:

[1, 2, 4, 7, 14, 28, 151, 302, 604, 1057, 2114, 4228, 4999, 9998, 19996, 34993, 69986, 139972, 754849, 1509698, 3019396, 5283943, 10567886, 21135772]

約数ペア:

[(1, 21135772), (2, 10567886), (4, 5283943), (7, 3019396), (14, 1509698), (28, 754849), (151, 139972), (302, 69986), (604, 34993), (1057, 19996), (2114, 9998), (4228, 4999)]