19884085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{601}}^1$

素因数の和:1128

約数の個数: 16

約数和(自身を含む): 25789680

約数和(自身を除く): 5905595

約数列:

[1, 5, 13, 65, 509, 601, 2545, 3005, 6617, 7813, 33085, 39065, 305909, 1529545, 3976817, 19884085]

約数ペア:

[(1, 19884085), (5, 3976817), (13, 1529545), (65, 305909), (509, 39065), (601, 33085), (2545, 7813), (3005, 6617)]