258715828

素因数分解:

$2^2\times 7^1\times {\mathrm{487}}^1\times {\mathrm{18973}}^1$

素因数の和:19471

約数の個数: 24

約数和(自身を含む): 518521472

約数和(自身を除く): 259805644

約数列:

[1, 2, 4, 7, 14, 28, 487, 974, 1948, 3409, 6818, 13636, 18973, 37946, 75892, 132811, 265622, 531244, 9239851, 18479702, 36959404, 64678957, 129357914, 258715828]

約数ペア:

[(1, 258715828), (2, 129357914), (4, 64678957), (7, 36959404), (14, 18479702), (28, 9239851), (487, 531244), (974, 265622), (1948, 132811), (3409, 75892), (6818, 37946), (13636, 18973)]