20378672

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{1987}}^1$

素因数の和:2636

約数の個数: 20

約数和(自身を含む): 39565176

約数和(自身を除く): 19186504

約数列:

[1, 2, 4, 8, 16, 641, 1282, 1987, 2564, 3974, 5128, 7948, 10256, 15896, 31792, 1273667, 2547334, 5094668, 10189336, 20378672]

約数ペア:

[(1, 20378672), (2, 10189336), (4, 5094668), (8, 2547334), (16, 1273667), (641, 31792), (1282, 15896), (1987, 10256), (2564, 7948), (3974, 5128)]