80665720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65053}}^1$

素因数の和:65095

約数の個数: 32

約数和(自身を含む): 187355520

約数和(自身を除く): 106689800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 65053, 130106, 260212, 325265, 520424, 650530, 1301060, 2016643, 2602120, 4033286, 8066572, 10083215, 16133144, 20166430, 40332860, 80665720]

約数ペア:

[(1, 80665720), (2, 40332860), (4, 20166430), (5, 16133144), (8, 10083215), (10, 8066572), (20, 4033286), (31, 2602120), (40, 2016643), (62, 1301060), (124, 650530), (155, 520424), (248, 325265), (310, 260212), (620, 130106), (1240, 65053)]