21807685840

素因数分解:

$2^4\times 5^1\times {\mathrm{272596073}}^1$

素因数の和:272596086

約数の個数: 20

約数和(自身を含む): 50702869764

約数和(自身を除く): 28895183924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272596073, 545192146, 1090384292, 1362980365, 2180768584, 2725960730, 4361537168, 5451921460, 10903842920, 21807685840]

約数ペア:

[(1, 21807685840), (2, 10903842920), (4, 5451921460), (5, 4361537168), (8, 2725960730), (10, 2180768584), (16, 1362980365), (20, 1090384292), (40, 545192146), (80, 272596073)]