209219409

素因数分解:

$3^3\times 7^1\times {\mathrm{151}}^1\times {\mathrm{7331}}^1$

素因数の和:7498

約数の個数: 32

約数和(自身を含む): 356628480

約数和(自身を除く): 147409071

約数列:

[1, 3, 7, 9, 21, 27, 63, 151, 189, 453, 1057, 1359, 3171, 4077, 7331, 9513, 21993, 28539, 51317, 65979, 153951, 197937, 461853, 1106981, 1385559, 3320943, 7748867, 9962829, 23246601, 29888487, 69739803, 209219409]

約数ペア:

[(1, 209219409), (3, 69739803), (7, 29888487), (9, 23246601), (21, 9962829), (27, 7748867), (63, 3320943), (151, 1385559), (189, 1106981), (453, 461853), (1057, 197937), (1359, 153951), (3171, 65979), (4077, 51317), (7331, 28539), (9513, 21993)]