21043984

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101173}}^1$

素因数の和:101194

約数の個数: 20

約数和(自身を含む): 43909516

約数和(自身を除く): 22865532

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101173, 202346, 404692, 809384, 1315249, 1618768, 2630498, 5260996, 10521992, 21043984]

約数ペア:

[(1, 21043984), (2, 10521992), (4, 5260996), (8, 2630498), (13, 1618768), (16, 1315249), (26, 809384), (52, 404692), (104, 202346), (208, 101173)]