20001990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{666733}}^1$

素因数の和:666743

約数の個数: 16

約数和(自身を含む): 48004848

約数和(自身を除く): 28002858

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 666733, 1333466, 2000199, 3333665, 4000398, 6667330, 10000995, 20001990]

約数ペア:

[(1, 20001990), (2, 10000995), (3, 6667330), (5, 4000398), (6, 3333665), (10, 2000199), (15, 1333466), (30, 666733)]