28001090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{215393}}^1$

素因数の和:215413

約数の個数: 16

約数和(自身を含む): 54279288

約数和(自身を除く): 26278198

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 215393, 430786, 1076965, 2153930, 2800109, 5600218, 14000545, 28001090]

約数ペア:

[(1, 28001090), (2, 14000545), (5, 5600218), (10, 2800109), (13, 2153930), (26, 1076965), (65, 430786), (130, 215393)]