28771245

素因数分解:

$3^2\times 5^1\times {\mathrm{639361}}^1$

素因数の和:639372

約数の個数: 12

約数和(自身を含む): 49870236

約数和(自身を除く): 21098991

約数列:

[1, 3, 5, 9, 15, 45, 639361, 1918083, 3196805, 5754249, 9590415, 28771245]

約数ペア:

[(1, 28771245), (3, 9590415), (5, 5754249), (9, 3196805), (15, 1918083), (45, 639361)]