20691472

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{3907}}^1$

素因数の和:4246

約数の個数: 20

約数和(自身を含む): 40221136

約数和(自身を除く): 19529664

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 3907, 5296, 7814, 15628, 31256, 62512, 1293217, 2586434, 5172868, 10345736, 20691472]

約数ペア:

[(1, 20691472), (2, 10345736), (4, 5172868), (8, 2586434), (16, 1293217), (331, 62512), (662, 31256), (1324, 15628), (2648, 7814), (3907, 5296)]