20561456

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{24247}}^1$

素因数の和:24308

約数の個数: 20

約数和(自身を含む): 40591152

約数和(自身を除く): 20029696

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 24247, 48494, 96988, 193976, 387952, 1285091, 2570182, 5140364, 10280728, 20561456]

約数ペア:

[(1, 20561456), (2, 10280728), (4, 5140364), (8, 2570182), (16, 1285091), (53, 387952), (106, 193976), (212, 96988), (424, 48494), (848, 24247)]