2491720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{809}}^1$

素因数の和:838

約数の個数: 64

約数和(自身を含む): 6998400

約数和(自身を除く): 4506680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 809, 1540, 1618, 3080, 3236, 4045, 5663, 6472, 8090, 8899, 11326, 16180, 17798, 22652, 28315, 32360, 35596, 44495, 45304, 56630, 62293, 71192, 88990, 113260, 124586, 177980, 226520, 249172, 311465, 355960, 498344, 622930, 1245860, 2491720]

約数ペア:

[(1, 2491720), (2, 1245860), (4, 622930), (5, 498344), (7, 355960), (8, 311465), (10, 249172), (11, 226520), (14, 177980), (20, 124586), (22, 113260), (28, 88990), (35, 71192), (40, 62293), (44, 56630), (55, 45304), (56, 44495), (70, 35596), (77, 32360), (88, 28315), (110, 22652), (140, 17798), (154, 16180), (220, 11326), (280, 8899), (308, 8090), (385, 6472), (440, 5663), (616, 4045), (770, 3236), (809, 3080), (1540, 1618)]