19897456

素因数分解:

$2^4\times {\mathrm{317}}^1\times {\mathrm{3923}}^1$

素因数の和:4248

約数の個数: 20

約数和(自身を含む): 38682792

約数和(自身を除く): 18785336

約数列:

[1, 2, 4, 8, 16, 317, 634, 1268, 2536, 3923, 5072, 7846, 15692, 31384, 62768, 1243591, 2487182, 4974364, 9948728, 19897456]

約数ペア:

[(1, 19897456), (2, 9948728), (4, 4974364), (8, 2487182), (16, 1243591), (317, 62768), (634, 31384), (1268, 15692), (2536, 7846), (3923, 5072)]