18694809

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 32361472

約数和(自身を除く): 13666663

約数列:

[1, 3, 7, 9, 21, 43, 63, 67, 103, 129, 201, 301, 309, 387, 469, 603, 721, 903, 927, 1407, 2163, 2709, 2881, 4221, 4429, 6489, 6901, 8643, 13287, 20167, 20703, 25929, 31003, 39861, 48307, 60501, 62109, 93009, 144921, 181503, 279027, 296743, 434763, 890229, 2077201, 2670687, 6231603, 18694809]

約数ペア:

[(1, 18694809), (3, 6231603), (7, 2670687), (9, 2077201), (21, 890229), (43, 434763), (63, 296743), (67, 279027), (103, 181503), (129, 144921), (201, 93009), (301, 62109), (309, 60501), (387, 48307), (469, 39861), (603, 31003), (721, 25929), (903, 20703), (927, 20167), (1407, 13287), (2163, 8643), (2709, 6901), (2881, 6489), (4221, 4429)]