12790820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 30914688

約数和(自身を除く): 18123868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 433, 844, 866, 1055, 1477, 1732, 2110, 2165, 2954, 3031, 4220, 4330, 5908, 6062, 7385, 8660, 12124, 14770, 15155, 29540, 30310, 60620, 91363, 182726, 365452, 456815, 639541, 913630, 1279082, 1827260, 2558164, 3197705, 6395410, 12790820]

約数ペア:

[(1, 12790820), (2, 6395410), (4, 3197705), (5, 2558164), (7, 1827260), (10, 1279082), (14, 913630), (20, 639541), (28, 456815), (35, 365452), (70, 182726), (140, 91363), (211, 60620), (422, 30310), (433, 29540), (844, 15155), (866, 14770), (1055, 12124), (1477, 8660), (1732, 7385), (2110, 6062), (2165, 5908), (2954, 4330), (3031, 4220)]