20761720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74149}}^1$

素因数の和:74167

約数の個数: 32

約数和(自身を含む): 53388000

約数和(自身を除く): 32626280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74149, 148298, 296596, 370745, 519043, 593192, 741490, 1038086, 1482980, 2076172, 2595215, 2965960, 4152344, 5190430, 10380860, 20761720]

約数ペア:

[(1, 20761720), (2, 10380860), (4, 5190430), (5, 4152344), (7, 2965960), (8, 2595215), (10, 2076172), (14, 1482980), (20, 1038086), (28, 741490), (35, 593192), (40, 519043), (56, 370745), (70, 296596), (140, 148298), (280, 74149)]