28705430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{220811}}^1$

素因数の和:220831

約数の個数: 16

約数和(自身を含む): 55644624

約数和(自身を除く): 26939194

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 220811, 441622, 1104055, 2208110, 2870543, 5741086, 14352715, 28705430]

約数ペア:

[(1, 28705430), (2, 14352715), (5, 5741086), (10, 2870543), (13, 2208110), (26, 1104055), (65, 441622), (130, 220811)]