18198988

素因数分解:

$2^2\times {\mathrm{101}}^1\times {\mathrm{107}}^1\times {\mathrm{421}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 32541264

約数和(自身を除く): 14342276

約数列:

[1, 2, 4, 101, 107, 202, 214, 404, 421, 428, 842, 1684, 10807, 21614, 42521, 43228, 45047, 85042, 90094, 170084, 180188, 4549747, 9099494, 18198988]

約数ペア:

[(1, 18198988), (2, 9099494), (4, 4549747), (101, 180188), (107, 170084), (202, 90094), (214, 85042), (404, 45047), (421, 43228), (428, 42521), (842, 21614), (1684, 10807)]