80515780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{373}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 174170304

約数和(自身を除く): 93654524

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 251, 373, 430, 502, 746, 860, 1004, 1255, 1492, 1865, 2510, 3730, 5020, 7460, 10793, 16039, 21586, 32078, 43172, 53965, 64156, 80195, 93623, 107930, 160390, 187246, 215860, 320780, 374492, 468115, 936230, 1872460, 4025789, 8051578, 16103156, 20128945, 40257890, 80515780]

約数ペア:

[(1, 80515780), (2, 40257890), (4, 20128945), (5, 16103156), (10, 8051578), (20, 4025789), (43, 1872460), (86, 936230), (172, 468115), (215, 374492), (251, 320780), (373, 215860), (430, 187246), (502, 160390), (746, 107930), (860, 93623), (1004, 80195), (1255, 64156), (1492, 53965), (1865, 43172), (2510, 32078), (3730, 21586), (5020, 16039), (7460, 10793)]