20341720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72649}}^1$

素因数の和:72667

約数の個数: 32

約数和(自身を含む): 52308000

約数和(自身を除く): 31966280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72649, 145298, 290596, 363245, 508543, 581192, 726490, 1017086, 1452980, 2034172, 2542715, 2905960, 4068344, 5085430, 10170860, 20341720]

約数ペア:

[(1, 20341720), (2, 10170860), (4, 5085430), (5, 4068344), (7, 2905960), (8, 2542715), (10, 2034172), (14, 1452980), (20, 1017086), (28, 726490), (35, 581192), (40, 508543), (56, 363245), (70, 290596), (140, 145298), (280, 72649)]