20940872

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4967}}^1$

素因数の和:5021

約数の個数: 32

約数和(自身を含む): 42923520

約数和(自身を除く): 21982648

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 4967, 9934, 19868, 39736, 84439, 153977, 168878, 307954, 337756, 615908, 675512, 1231816, 2617609, 5235218, 10470436, 20940872]

約数ペア:

[(1, 20940872), (2, 10470436), (4, 5235218), (8, 2617609), (17, 1231816), (31, 675512), (34, 615908), (62, 337756), (68, 307954), (124, 168878), (136, 153977), (248, 84439), (527, 39736), (1054, 19868), (2108, 9934), (4216, 4967)]