217686

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:156

約数の個数: 32

約数和(自身を含む): 511488

約数和(自身を除く): 293802

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 71, 73, 142, 146, 213, 219, 426, 438, 497, 511, 994, 1022, 1491, 1533, 2982, 3066, 5183, 10366, 15549, 31098, 36281, 72562, 108843, 217686]

約数ペア:

[(1, 217686), (2, 108843), (3, 72562), (6, 36281), (7, 31098), (14, 15549), (21, 10366), (42, 5183), (71, 3066), (73, 2982), (142, 1533), (146, 1491), (213, 1022), (219, 994), (426, 511), (438, 497)]