19936821

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{4177}}^1$

素因数の和:4260

約数の個数: 16

約数和(自身を含む): 27942464

約数和(自身を除く): 8005643

約数列:

[1, 3, 37, 43, 111, 129, 1591, 4177, 4773, 12531, 154549, 179611, 463647, 538833, 6645607, 19936821]

約数ペア:

[(1, 19936821), (3, 6645607), (37, 538833), (43, 463647), (111, 179611), (129, 154549), (1591, 12531), (4177, 4773)]