21541195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 29211840

約数和(自身を除く): 7670645

約数列:

[1, 5, 13, 41, 59, 65, 137, 205, 295, 533, 685, 767, 1781, 2419, 2665, 3835, 5617, 8083, 8905, 12095, 28085, 31447, 40415, 73021, 105079, 157235, 331403, 365105, 525395, 1657015, 4308239, 21541195]

約数ペア:

[(1, 21541195), (5, 4308239), (13, 1657015), (41, 525395), (59, 365105), (65, 331403), (137, 157235), (205, 105079), (295, 73021), (533, 40415), (685, 31447), (767, 28085), (1781, 12095), (2419, 8905), (2665, 8083), (3835, 5617)]