18479241

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:338

約数の個数: 36

約数和(自身を含む): 29877120

約数和(自身を除く): 11397879

約数列:

[1, 3, 9, 11, 33, 71, 99, 121, 213, 239, 363, 639, 717, 781, 1089, 2151, 2343, 2629, 7029, 7887, 8591, 16969, 23661, 25773, 28919, 50907, 77319, 86757, 152721, 186659, 260271, 559977, 1679931, 2053249, 6159747, 18479241]

約数ペア:

[(1, 18479241), (3, 6159747), (9, 2053249), (11, 1679931), (33, 559977), (71, 260271), (99, 186659), (121, 152721), (213, 86757), (239, 77319), (363, 50907), (639, 28919), (717, 25773), (781, 23661), (1089, 16969), (2151, 8591), (2343, 7887), (2629, 7029)]