21244784

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120709}}^1$

素因数の和:120728

約数の個数: 20

約数和(自身を含む): 44904120

約数和(自身を除く): 23659336

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120709, 241418, 482836, 965672, 1327799, 1931344, 2655598, 5311196, 10622392, 21244784]

約数ペア:

[(1, 21244784), (2, 10622392), (4, 5311196), (8, 2655598), (11, 1931344), (16, 1327799), (22, 965672), (44, 482836), (88, 241418), (176, 120709)]