78993465

素因数分解:

$3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{20981}}^1$

素因数の和:21240

約数の個数: 16

約数和(自身を含む): 126899136

約数和(自身を除く): 47905671

約数列:

[1, 3, 5, 15, 251, 753, 1255, 3765, 20981, 62943, 104905, 314715, 5266231, 15798693, 26331155, 78993465]

約数ペア:

[(1, 78993465), (3, 26331155), (5, 15798693), (15, 5266231), (251, 314715), (753, 104905), (1255, 62943), (3765, 20981)]