1245860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{809}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 3265920

約数和(自身を除く): 2020060

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 809, 1540, 1618, 3236, 4045, 5663, 8090, 8899, 11326, 16180, 17798, 22652, 28315, 35596, 44495, 56630, 62293, 88990, 113260, 124586, 177980, 249172, 311465, 622930, 1245860]

約数ペア:

[(1, 1245860), (2, 622930), (4, 311465), (5, 249172), (7, 177980), (10, 124586), (11, 113260), (14, 88990), (20, 62293), (22, 56630), (28, 44495), (35, 35596), (44, 28315), (55, 22652), (70, 17798), (77, 16180), (110, 11326), (140, 8899), (154, 8090), (220, 5663), (308, 4045), (385, 3236), (770, 1618), (809, 1540)]