858128840

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1\times {\mathrm{673}}^1$

素因数の和:1062

約数の個数: 64

約数和(自身を含む): 1956648960

約数和(自身を除く): 1098520120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 251, 254, 502, 508, 635, 673, 1004, 1016, 1255, 1270, 1346, 2008, 2510, 2540, 2692, 3365, 5020, 5080, 5384, 6730, 10040, 13460, 26920, 31877, 63754, 85471, 127508, 159385, 168923, 170942, 255016, 318770, 337846, 341884, 427355, 637540, 675692, 683768, 844615, 854710, 1275080, 1351384, 1689230, 1709420, 3378460, 3418840, 6756920, 21453221, 42906442, 85812884, 107266105, 171625768, 214532210, 429064420, 858128840]

約数ペア:

[(1, 858128840), (2, 429064420), (4, 214532210), (5, 171625768), (8, 107266105), (10, 85812884), (20, 42906442), (40, 21453221), (127, 6756920), (251, 3418840), (254, 3378460), (502, 1709420), (508, 1689230), (635, 1351384), (673, 1275080), (1004, 854710), (1016, 844615), (1255, 683768), (1270, 675692), (1346, 637540), (2008, 427355), (2510, 341884), (2540, 337846), (2692, 318770), (3365, 255016), (5020, 170942), (5080, 168923), (5384, 159385), (6730, 127508), (10040, 85471), (13460, 63754), (26920, 31877)]