221870019

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1\times {\mathrm{1009}}^1$

素因数の和:1339

約数の個数: 32

約数和(自身を含む): 348797440

約数和(自身を除く): 126927421

約数列:

[1, 3, 7, 21, 37, 111, 259, 283, 777, 849, 1009, 1981, 3027, 5943, 7063, 10471, 21189, 31413, 37333, 73297, 111999, 219891, 261331, 285547, 783993, 856641, 1998829, 5996487, 10565239, 31695717, 73956673, 221870019]

約数ペア:

[(1, 221870019), (3, 73956673), (7, 31695717), (21, 10565239), (37, 5996487), (111, 1998829), (259, 856641), (283, 783993), (777, 285547), (849, 261331), (1009, 219891), (1981, 111999), (3027, 73297), (5943, 37333), (7063, 31413), (10471, 21189)]