19730655

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20879}}^1$

素因数の和:20900

約数の個数: 32

約数和(自身を含む): 40089600

約数和(自身を除く): 20358945

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20879, 62637, 104395, 146153, 187911, 313185, 438459, 563733, 730765, 939555, 1315377, 2192295, 2818665, 3946131, 6576885, 19730655]

約数ペア:

[(1, 19730655), (3, 6576885), (5, 3946131), (7, 2818665), (9, 2192295), (15, 1315377), (21, 939555), (27, 730765), (35, 563733), (45, 438459), (63, 313185), (105, 187911), (135, 146153), (189, 104395), (315, 62637), (945, 20879)]