21123156976

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69484069}}^1$

素因数の和:69484096

約数の個数: 20

約数和(自身を含む): 43080123400

約数和(自身を除く): 21956966424

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69484069, 138968138, 277936276, 555872552, 1111745104, 1320197311, 2640394622, 5280789244, 10561578488, 21123156976]

約数ペア:

[(1, 21123156976), (2, 10561578488), (4, 5280789244), (8, 2640394622), (16, 1320197311), (19, 1111745104), (38, 555872552), (76, 277936276), (152, 138968138), (304, 69484069)]