291245480

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{14951}}^1$

素因数の和:15449

約数の個数: 32

約数和(自身を含む): 656691840

約数和(自身を除く): 365446360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4870, 9740, 14951, 19480, 29902, 59804, 74755, 119608, 149510, 299020, 598040, 7281137, 14562274, 29124548, 36405685, 58249096, 72811370, 145622740, 291245480]

約数ペア:

[(1, 291245480), (2, 145622740), (4, 72811370), (5, 58249096), (8, 36405685), (10, 29124548), (20, 14562274), (40, 7281137), (487, 598040), (974, 299020), (1948, 149510), (2435, 119608), (3896, 74755), (4870, 59804), (9740, 29902), (14951, 19480)]