21019312

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{13007}}^1$

素因数の和:13116

約数の個数: 20

約数和(自身を含む): 41131296

約数和(自身を除く): 20111984

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 13007, 26014, 52028, 104056, 208112, 1313707, 2627414, 5254828, 10509656, 21019312]

約数ペア:

[(1, 21019312), (2, 10509656), (4, 5254828), (8, 2627414), (16, 1313707), (101, 208112), (202, 104056), (404, 52028), (808, 26014), (1616, 13007)]