18657121

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{1259}}^1$

素因数の和:1368

約数の個数: 16

約数和(自身を含む): 22377600

約数和(自身を除く): 3720479

約数列:

[1, 7, 29, 73, 203, 511, 1259, 2117, 8813, 14819, 36511, 91907, 255577, 643349, 2665303, 18657121]

約数ペア:

[(1, 18657121), (7, 2665303), (29, 643349), (73, 255577), (203, 91907), (511, 36511), (1259, 14819), (2117, 8813)]