21260165

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{929}}^1$

素因数の和:1156

約数の個数: 16

約数和(自身を含む): 26784000

約数和(自身を除く): 5523835

約数列:

[1, 5, 23, 115, 199, 929, 995, 4577, 4645, 21367, 22885, 106835, 184871, 924355, 4252033, 21260165]

約数ペア:

[(1, 21260165), (5, 4252033), (23, 924355), (115, 184871), (199, 106835), (929, 22885), (995, 21367), (4577, 4645)]