28811380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110813}}^1$

素因数の和:110835

約数の個数: 24

約数和(自身を含む): 65158632

約数和(自身を除く): 36347252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110813, 221626, 443252, 554065, 1108130, 1440569, 2216260, 2881138, 5762276, 7202845, 14405690, 28811380]

約数ペア:

[(1, 28811380), (2, 14405690), (4, 7202845), (5, 5762276), (10, 2881138), (13, 2216260), (20, 1440569), (26, 1108130), (52, 554065), (65, 443252), (130, 221626), (260, 110813)]