1611440

素因数分解:

$2^4\times 5^1\times {\mathrm{20143}}^1$

素因数の和:20156

約数の個数: 20

約数和(自身を含む): 3746784

約数和(自身を除く): 2135344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20143, 40286, 80572, 100715, 161144, 201430, 322288, 402860, 805720, 1611440]

約数ペア:

[(1, 1611440), (2, 805720), (4, 402860), (5, 322288), (8, 201430), (10, 161144), (16, 100715), (20, 80572), (40, 40286), (80, 20143)]