18704169

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:978

約数の個数: 32

約数和(自身を含む): 30689280

約数和(自身を除く): 11985111

約数列:

[1, 3, 9, 11, 27, 33, 71, 99, 213, 297, 639, 781, 887, 1917, 2343, 2661, 7029, 7983, 9757, 21087, 23949, 29271, 62977, 87813, 188931, 263439, 566793, 692747, 1700379, 2078241, 6234723, 18704169]

約数ペア:

[(1, 18704169), (3, 6234723), (9, 2078241), (11, 1700379), (27, 692747), (33, 566793), (71, 263439), (99, 188931), (213, 87813), (297, 62977), (639, 29271), (781, 23949), (887, 21087), (1917, 9757), (2343, 7983), (2661, 7029)]