20257136

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40841}}^1$

素因数の和:40880

約数の個数: 20

約数和(自身を含む): 40515264

約数和(自身を除く): 20258128

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40841, 81682, 163364, 326728, 653456, 1266071, 2532142, 5064284, 10128568, 20257136]

約数ペア:

[(1, 20257136), (2, 10128568), (4, 5064284), (8, 2532142), (16, 1266071), (31, 653456), (62, 326728), (124, 163364), (248, 81682), (496, 40841)]