20987554

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{541}}^1$

素因数の和:730

約数の個数: 32

約数和(自身を含む): 38399616

約数和(自身を除く): 17412062

約数列:

[1, 2, 7, 14, 17, 34, 119, 163, 238, 326, 541, 1082, 1141, 2282, 2771, 3787, 5542, 7574, 9197, 18394, 19397, 38794, 64379, 88183, 128758, 176366, 617281, 1234562, 1499111, 2998222, 10493777, 20987554]

約数ペア:

[(1, 20987554), (2, 10493777), (7, 2998222), (14, 1499111), (17, 1234562), (34, 617281), (119, 176366), (163, 128758), (238, 88183), (326, 64379), (541, 38794), (1082, 19397), (1141, 18394), (2282, 9197), (2771, 7574), (3787, 5542)]