203207420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{781567}}^1$

素因数の和:781589

約数の個数: 24

約数和(自身を含む): 459561984

約数和(自身を除く): 256354564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 781567, 1563134, 3126268, 3907835, 7815670, 10160371, 15631340, 20320742, 40641484, 50801855, 101603710, 203207420]

約数ペア:

[(1, 203207420), (2, 101603710), (4, 50801855), (5, 40641484), (10, 20320742), (13, 15631340), (20, 10160371), (26, 7815670), (52, 3907835), (65, 3126268), (130, 1563134), (260, 781567)]