217471420

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{43321}}^1$

素因数の和:43581

約数の個数: 24

約数和(自身を含む): 458520048

約数和(自身を除く): 241048628

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 43321, 86642, 173284, 216605, 433210, 866420, 10873571, 21747142, 43494284, 54367855, 108735710, 217471420]

約数ペア:

[(1, 217471420), (2, 108735710), (4, 54367855), (5, 43494284), (10, 21747142), (20, 10873571), (251, 866420), (502, 433210), (1004, 216605), (1255, 173284), (2510, 86642), (5020, 43321)]