20110928

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29231}}^1$

素因数の和:29282

約数の個数: 20

約数和(自身を含む): 39872448

約数和(自身を除く): 19761520

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29231, 58462, 116924, 233848, 467696, 1256933, 2513866, 5027732, 10055464, 20110928]

約数ペア:

[(1, 20110928), (2, 10055464), (4, 5027732), (8, 2513866), (16, 1256933), (43, 467696), (86, 233848), (172, 116924), (344, 58462), (688, 29231)]