20701825

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 26516160

約数和(自身を除く): 5814335

約数列:

[1, 5, 25, 71, 107, 109, 355, 535, 545, 1775, 2675, 2725, 7597, 7739, 11663, 37985, 38695, 58315, 189925, 193475, 291575, 828073, 4140365, 20701825]

約数ペア:

[(1, 20701825), (5, 4140365), (25, 828073), (71, 291575), (107, 193475), (109, 189925), (355, 58315), (535, 38695), (545, 37985), (1775, 11663), (2675, 7739), (2725, 7597)]