13212880

素因数分解:

$2^4\times 5^1\times {\mathrm{165161}}^1$

素因数の和:165174

約数の個数: 20

約数和(自身を含む): 30720132

約数和(自身を除く): 17507252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 165161, 330322, 660644, 825805, 1321288, 1651610, 2642576, 3303220, 6606440, 13212880]

約数ペア:

[(1, 13212880), (2, 6606440), (4, 3303220), (5, 2642576), (8, 1651610), (10, 1321288), (16, 825805), (20, 660644), (40, 330322), (80, 165161)]