128280976

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{258631}}^1$

素因数の和:258670

約数の個数: 20

約数和(自身を含む): 256562944

約数和(自身を除く): 128281968

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 258631, 517262, 1034524, 2069048, 4138096, 8017561, 16035122, 32070244, 64140488, 128280976]

約数ペア:

[(1, 128280976), (2, 64140488), (4, 32070244), (8, 16035122), (16, 8017561), (31, 4138096), (62, 2069048), (124, 1034524), (248, 517262), (496, 258631)]