21821384

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{209821}}^1$

素因数の和:209840

約数の個数: 16

約数和(自身を含む): 44062620

約数和(自身を除く): 22241236

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 209821, 419642, 839284, 1678568, 2727673, 5455346, 10910692, 21821384]

約数ペア:

[(1, 21821384), (2, 10910692), (4, 5455346), (8, 2727673), (13, 1678568), (26, 839284), (52, 419642), (104, 209821)]