19782747

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{541}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 30438720

約数和(自身を除く): 10655973

約数列:

[1, 3, 9, 17, 51, 153, 239, 541, 717, 1623, 2151, 4063, 4869, 9197, 12189, 27591, 36567, 82773, 129299, 387897, 1163691, 2198083, 6594249, 19782747]

約数ペア:

[(1, 19782747), (3, 6594249), (9, 2198083), (17, 1163691), (51, 387897), (153, 129299), (239, 82773), (541, 36567), (717, 27591), (1623, 12189), (2151, 9197), (4063, 4869)]