21384656

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8513}}^1$

素因数の和:8678

約数の個数: 20

約数和(自身を含む): 41701572

約数和(自身を除く): 20316916

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8513, 17026, 34052, 68104, 136208, 1336541, 2673082, 5346164, 10692328, 21384656]

約数ペア:

[(1, 21384656), (2, 10692328), (4, 5346164), (8, 2673082), (16, 1336541), (157, 136208), (314, 68104), (628, 34052), (1256, 17026), (2512, 8513)]