2558780

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{373}}^1$

素因数の和:403

約数の個数: 48

約数和(自身を含む): 6283200

約数和(自身を除く): 3724420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 373, 490, 686, 746, 980, 1372, 1492, 1715, 1865, 2611, 3430, 3730, 5222, 6860, 7460, 10444, 13055, 18277, 26110, 36554, 52220, 73108, 91385, 127939, 182770, 255878, 365540, 511756, 639695, 1279390, 2558780]

約数ペア:

[(1, 2558780), (2, 1279390), (4, 639695), (5, 511756), (7, 365540), (10, 255878), (14, 182770), (20, 127939), (28, 91385), (35, 73108), (49, 52220), (70, 36554), (98, 26110), (140, 18277), (196, 13055), (245, 10444), (343, 7460), (373, 6860), (490, 5222), (686, 3730), (746, 3430), (980, 2611), (1372, 1865), (1492, 1715)]