20419945

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{44879}}^1$

素因数の和:44904

約数の個数: 16

約数和(自身を含む): 30159360

約数和(自身を除く): 9739415

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 44879, 224395, 314153, 583427, 1570765, 2917135, 4083989, 20419945]

約数ペア:

[(1, 20419945), (5, 4083989), (7, 2917135), (13, 1570765), (35, 583427), (65, 314153), (91, 224395), (455, 44879)]