19980311

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:730

約数の個数: 16

約数和(自身を含む): 22425984

約数和(自身を除く): 2445673

約数列:

[1, 13, 47, 53, 611, 617, 689, 2491, 8021, 28999, 32383, 32701, 376987, 425113, 1536947, 19980311]

約数ペア:

[(1, 19980311), (13, 1536947), (47, 425113), (53, 376987), (611, 32701), (617, 32383), (689, 28999), (2491, 8021)]