201390021

素因数分解:

$3^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{4987}}^1$

素因数の和:5641

約数の個数: 24

約数和(自身を含む): 333038784

約数和(自身を除く): 131648763

約数列:

[1, 3, 7, 9, 21, 63, 641, 1923, 4487, 4987, 5769, 13461, 14961, 34909, 40383, 44883, 104727, 314181, 3196667, 9590001, 22376669, 28770003, 67130007, 201390021]

約数ペア:

[(1, 201390021), (3, 67130007), (7, 28770003), (9, 22376669), (21, 9590001), (63, 3196667), (641, 314181), (1923, 104727), (4487, 44883), (4987, 40383), (5769, 34909), (13461, 14961)]