287770520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{232073}}^1$

素因数の和:232115

約数の個数: 32

約数和(自身を含む): 668373120

約数和(自身を除く): 380602600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 232073, 464146, 928292, 1160365, 1856584, 2320730, 4641460, 7194263, 9282920, 14388526, 28777052, 35971315, 57554104, 71942630, 143885260, 287770520]

約数ペア:

[(1, 287770520), (2, 143885260), (4, 71942630), (5, 57554104), (8, 35971315), (10, 28777052), (20, 14388526), (31, 9282920), (40, 7194263), (62, 4641460), (124, 2320730), (155, 1856584), (248, 1160365), (310, 928292), (620, 464146), (1240, 232073)]