201781520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{132751}}^1$

素因数の和:132783

約数の個数: 40

約数和(自身を含む): 493837440

約数和(自身を除く): 292055920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 132751, 265502, 531004, 663755, 1062008, 1327510, 2124016, 2522269, 2655020, 5044538, 5310040, 10089076, 10620080, 12611345, 20178152, 25222690, 40356304, 50445380, 100890760, 201781520]

約数ペア:

[(1, 201781520), (2, 100890760), (4, 50445380), (5, 40356304), (8, 25222690), (10, 20178152), (16, 12611345), (19, 10620080), (20, 10089076), (38, 5310040), (40, 5044538), (76, 2655020), (80, 2522269), (95, 2124016), (152, 1327510), (190, 1062008), (304, 663755), (380, 531004), (760, 265502), (1520, 132751)]