21388267004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{523}}^1\times {\mathrm{786449}}^1$

素因数の和:786989

約数の個数: 24

約数和(自身を含む): 40385780400

約数和(自身を除く): 18997513396

約数列:

[1, 2, 4, 13, 26, 52, 523, 1046, 2092, 6799, 13598, 27196, 786449, 1572898, 3145796, 10223837, 20447674, 40895348, 411312827, 822625654, 1645251308, 5347066751, 10694133502, 21388267004]

約数ペア:

[(1, 21388267004), (2, 10694133502), (4, 5347066751), (13, 1645251308), (26, 822625654), (52, 411312827), (523, 40895348), (1046, 20447674), (2092, 10223837), (6799, 3145796), (13598, 1572898), (27196, 786449)]