21655888

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{18541}}^1$

素因数の和:18622

約数の個数: 20

約数和(自身を含む): 42535348

約数和(自身を除く): 20879460

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 18541, 37082, 74164, 148328, 296656, 1353493, 2706986, 5413972, 10827944, 21655888]

約数ペア:

[(1, 21655888), (2, 10827944), (4, 5413972), (8, 2706986), (16, 1353493), (73, 296656), (146, 148328), (292, 74164), (584, 37082), (1168, 18541)]