1557777234

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19971503}}^1$

素因数の和:19971521

約数の個数: 16

約数和(自身を含む): 3355212672

約数和(自身を除く): 1797435438

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 19971503, 39943006, 59914509, 119829018, 259629539, 519259078, 778888617, 1557777234]

約数ペア:

[(1, 1557777234), (2, 778888617), (3, 519259078), (6, 259629539), (13, 119829018), (26, 59914509), (39, 39943006), (78, 19971503)]