19725872

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{18401}}^1$

素因数の和:18476

約数の個数: 20

約数和(自身を含む): 38791416

約数和(自身を除く): 19065544

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 18401, 36802, 73604, 147208, 294416, 1232867, 2465734, 4931468, 9862936, 19725872]

約数ペア:

[(1, 19725872), (2, 9862936), (4, 4931468), (8, 2465734), (16, 1232867), (67, 294416), (134, 147208), (268, 73604), (536, 36802), (1072, 18401)]