19747468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1237}}^1$

素因数の和:1561

約数の個数: 24

約数和(自身を含む): 37367792

約数和(自身を除く): 17620324

約数列:

[1, 2, 4, 13, 26, 52, 307, 614, 1228, 1237, 2474, 3991, 4948, 7982, 15964, 16081, 32162, 64324, 379759, 759518, 1519036, 4936867, 9873734, 19747468]

約数ペア:

[(1, 19747468), (2, 9873734), (4, 4936867), (13, 1519036), (26, 759518), (52, 379759), (307, 64324), (614, 32162), (1228, 16081), (1237, 15964), (2474, 7982), (3991, 4948)]