1337640005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1\times {\mathrm{20641}}^1$

素因数の和:21656

約数の個数: 16

約数和(自身を含む): 1730460144

約数和(自身を除く): 392820139

約数列:

[1, 5, 13, 65, 997, 4985, 12961, 20641, 64805, 103205, 268333, 1341665, 20579077, 102895385, 267528001, 1337640005]

約数ペア:

[(1, 1337640005), (5, 267528001), (13, 102895385), (65, 20579077), (997, 1341665), (4985, 268333), (12961, 103205), (20641, 64805)]