661000

素因数分解:

$2^3\times 5^3\times {\mathrm{661}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 1549080

約数和(自身を除く): 888080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 661, 1000, 1322, 2644, 3305, 5288, 6610, 13220, 16525, 26440, 33050, 66100, 82625, 132200, 165250, 330500, 661000]

約数ペア:

[(1, 661000), (2, 330500), (4, 165250), (5, 132200), (8, 82625), (10, 66100), (20, 33050), (25, 26440), (40, 16525), (50, 13220), (100, 6610), (125, 5288), (200, 3305), (250, 2644), (500, 1322), (661, 1000)]