1988955

素因数分解:

$3^5\times 5^1\times {\mathrm{1637}}^1$

素因数の和:1657

約数の個数: 24

約数和(自身を含む): 3577392

約数和(自身を除く): 1588437

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 1637, 4911, 8185, 14733, 24555, 44199, 73665, 132597, 220995, 397791, 662985, 1988955]

約数ペア:

[(1, 1988955), (3, 662985), (5, 397791), (9, 220995), (15, 132597), (27, 73665), (45, 44199), (81, 24555), (135, 14733), (243, 8185), (405, 4911), (1215, 1637)]