18931587

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1\times {\mathrm{971}}^1$

素因数の和:1138

約数の個数: 16

約数和(自身を含む): 25909632

約数和(自身を除く): 6978045

約数列:

[1, 3, 67, 97, 201, 291, 971, 2913, 6499, 19497, 65057, 94187, 195171, 282561, 6310529, 18931587]

約数ペア:

[(1, 18931587), (3, 6310529), (67, 282561), (97, 195171), (201, 94187), (291, 65057), (971, 19497), (2913, 6499)]