19816389

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{557}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 29596320

約数和(自身を除く): 9779931

約数列:

[1, 3, 9, 59, 67, 177, 201, 531, 557, 603, 1671, 3953, 5013, 11859, 32863, 35577, 37319, 98589, 111957, 295767, 335871, 2201821, 6605463, 19816389]

約数ペア:

[(1, 19816389), (3, 6605463), (9, 2201821), (59, 335871), (67, 295767), (177, 111957), (201, 98589), (531, 37319), (557, 35577), (603, 32863), (1671, 11859), (3953, 5013)]