8991220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{64223}}^1$

素因数の和:64239

約数の個数: 24

約数和(自身を含む): 21579264

約数和(自身を除く): 12588044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 64223, 128446, 256892, 321115, 449561, 642230, 899122, 1284460, 1798244, 2247805, 4495610, 8991220]

約数ペア:

[(1, 8991220), (2, 4495610), (4, 2247805), (5, 1798244), (7, 1284460), (10, 899122), (14, 642230), (20, 449561), (28, 321115), (35, 256892), (70, 128446), (140, 64223)]