317936

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:680

約数の個数: 20

約数和(自身を含む): 636864

約数和(自身を除く): 318928

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 641, 1282, 2564, 5128, 10256, 19871, 39742, 79484, 158968, 317936]

約数ペア:

[(1, 317936), (2, 158968), (4, 79484), (8, 39742), (16, 19871), (31, 10256), (62, 5128), (124, 2564), (248, 1282), (496, 641)]