81322100

素因数分解:

$2^2\times 5^2\times {\mathrm{813221}}^1$

素因数の和:813235

約数の個数: 18

約数和(自身を含む): 176469174

約数和(自身を除く): 95147074

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 813221, 1626442, 3252884, 4066105, 8132210, 16264420, 20330525, 40661050, 81322100]

約数ペア:

[(1, 81322100), (2, 40661050), (4, 20330525), (5, 16264420), (10, 8132210), (20, 4066105), (25, 3252884), (50, 1626442), (100, 813221)]