21787137040

素因数分解:

$2^4\times 5^1\times {\mathrm{272339213}}^1$

素因数の和:272339226

約数の個数: 20

約数和(自身を含む): 50655093804

約数和(自身を除く): 28867956764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272339213, 544678426, 1089356852, 1361696065, 2178713704, 2723392130, 4357427408, 5446784260, 10893568520, 21787137040]

約数ペア:

[(1, 21787137040), (2, 10893568520), (4, 5446784260), (5, 4357427408), (8, 2723392130), (10, 2178713704), (16, 1361696065), (20, 1089356852), (40, 544678426), (80, 272339213)]