20806880

素因数分解:

$2^5\times 5^1\times {\mathrm{130043}}^1$

素因数の和:130058

約数の個数: 24

約数和(自身を含む): 49156632

約数和(自身を除く): 28349752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130043, 260086, 520172, 650215, 1040344, 1300430, 2080688, 2600860, 4161376, 5201720, 10403440, 20806880]

約数ペア:

[(1, 20806880), (2, 10403440), (4, 5201720), (5, 4161376), (8, 2600860), (10, 2080688), (16, 1300430), (20, 1040344), (32, 650215), (40, 520172), (80, 260086), (160, 130043)]