20536999

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:870

約数の個数: 16

約数和(自身を含む): 24652800

約数和(自身を除く): 4115801

約数列:

[1, 7, 23, 161, 199, 641, 1393, 4487, 4577, 14743, 32039, 103201, 127559, 892913, 2933857, 20536999]

約数ペア:

[(1, 20536999), (7, 2933857), (23, 892913), (161, 127559), (199, 103201), (641, 32039), (1393, 14743), (4487, 4577)]