21438608

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43223}}^1$

素因数の和:43262

約数の個数: 20

約数和(自身を含む): 42878208

約数和(自身を除く): 21439600

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43223, 86446, 172892, 345784, 691568, 1339913, 2679826, 5359652, 10719304, 21438608]

約数ペア:

[(1, 21438608), (2, 10719304), (4, 5359652), (8, 2679826), (16, 1339913), (31, 691568), (62, 345784), (124, 172892), (248, 86446), (496, 43223)]