1285940

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{569}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 2729160

約数和(自身を除く): 1443220

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 569, 1130, 1138, 2260, 2276, 2845, 5690, 11380, 64297, 128594, 257188, 321485, 642970, 1285940]

約数ペア:

[(1, 1285940), (2, 642970), (4, 321485), (5, 257188), (10, 128594), (20, 64297), (113, 11380), (226, 5690), (452, 2845), (565, 2276), (569, 2260), (1130, 1138)]