4500000020

素因数分解:

$2^2\times 5^1\times {\mathrm{12433}}^1\times {\mathrm{18097}}^1$

素因数の和:30539

約数の個数: 24

約数和(自身を含む): 9451282344

約数和(自身を除く): 4951282324

約数列:

[1, 2, 4, 5, 10, 20, 12433, 18097, 24866, 36194, 49732, 62165, 72388, 90485, 124330, 180970, 248660, 361940, 225000001, 450000002, 900000004, 1125000005, 2250000010, 4500000020]

約数ペア:

[(1, 4500000020), (2, 2250000010), (4, 1125000005), (5, 900000004), (10, 450000002), (20, 225000001), (12433, 361940), (18097, 248660), (24866, 180970), (36194, 124330), (49732, 90485), (62165, 72388)]