20081456

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{383}}^1$

素因数の和:533

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20630224

約数列:

[1, 2, 4, 8, 16, 29, 58, 113, 116, 226, 232, 383, 452, 464, 766, 904, 1532, 1808, 3064, 3277, 6128, 6554, 11107, 13108, 22214, 26216, 43279, 44428, 52432, 86558, 88856, 173116, 177712, 346232, 692464, 1255091, 2510182, 5020364, 10040728, 20081456]

約数ペア:

[(1, 20081456), (2, 10040728), (4, 5020364), (8, 2510182), (16, 1255091), (29, 692464), (58, 346232), (113, 177712), (116, 173116), (226, 88856), (232, 86558), (383, 52432), (452, 44428), (464, 43279), (766, 26216), (904, 22214), (1532, 13108), (1808, 11107), (3064, 6554), (3277, 6128)]