19798521

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 27060480

約数和(自身を除く): 7261959

約数列:

[1, 3, 53, 159, 239, 521, 717, 1563, 12667, 27613, 38001, 82839, 124519, 373557, 6599507, 19798521]

約数ペア:

[(1, 19798521), (3, 6599507), (53, 373557), (159, 124519), (239, 82839), (521, 38001), (717, 27613), (1563, 12667)]