21384784

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{16103}}^1$

素因数の和:16194

約数の個数: 20

約数和(自身を含む): 41934816

約数和(自身を除く): 20550032

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 16103, 32206, 64412, 128824, 257648, 1336549, 2673098, 5346196, 10692392, 21384784]

約数ペア:

[(1, 21384784), (2, 10692392), (4, 5346196), (8, 2673098), (16, 1336549), (83, 257648), (166, 128824), (332, 64412), (664, 32206), (1328, 16103)]