1242855

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 2190240

約数和(自身を除く): 947385

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 389, 639, 1065, 1167, 1945, 3195, 3501, 5835, 17505, 27619, 82857, 138095, 248571, 414285, 1242855]

約数ペア:

[(1, 1242855), (3, 414285), (5, 248571), (9, 138095), (15, 82857), (45, 27619), (71, 17505), (213, 5835), (355, 3501), (389, 3195), (639, 1945), (1065, 1167)]