28201509

素因数分解:

$3^2\times 7^2\times {\mathrm{63949}}^1$

素因数の和:63969

約数の個数: 18

約数和(自身を含む): 47386950

約数和(自身を除く): 19185441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 63949, 191847, 447643, 575541, 1342929, 3133501, 4028787, 9400503, 28201509]

約数ペア:

[(1, 28201509), (3, 9400503), (7, 4028787), (9, 3133501), (21, 1342929), (49, 575541), (63, 447643), (147, 191847), (441, 63949)]