210819780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{390407}}^1$

素因数の和:390425

約数の個数: 48

約数和(自身を含む): 655885440

約数和(自身を除く): 445065660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 390407, 780814, 1171221, 1561628, 1952035, 2342442, 3513663, 3904070, 4684884, 5856105, 7027326, 7808140, 10540989, 11712210, 14054652, 17568315, 21081978, 23424420, 35136630, 42163956, 52704945, 70273260, 105409890, 210819780]

約数ペア:

[(1, 210819780), (2, 105409890), (3, 70273260), (4, 52704945), (5, 42163956), (6, 35136630), (9, 23424420), (10, 21081978), (12, 17568315), (15, 14054652), (18, 11712210), (20, 10540989), (27, 7808140), (30, 7027326), (36, 5856105), (45, 4684884), (54, 3904070), (60, 3513663), (90, 2342442), (108, 1952035), (135, 1561628), (180, 1171221), (270, 780814), (540, 390407)]