18818807

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{653}}^1$

素因数の和:862

約数の個数: 16

約数和(自身を含む): 22602240

約数和(自身を除く): 3783433

約数列:

[1, 7, 23, 161, 179, 653, 1253, 4117, 4571, 15019, 28819, 105133, 116887, 818209, 2688401, 18818807]

約数ペア:

[(1, 18818807), (7, 2688401), (23, 818209), (161, 116887), (179, 105133), (653, 28819), (1253, 15019), (4117, 4571)]