266721680

素因数分解:

$2^4\times 5^1\times {\mathrm{811}}^1\times {\mathrm{4111}}^1$

素因数の和:4935

約数の個数: 40

約数和(自身を含む): 621043584

約数和(自身を除く): 354321904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811, 1622, 3244, 4055, 4111, 6488, 8110, 8222, 12976, 16220, 16444, 20555, 32440, 32888, 41110, 64880, 65776, 82220, 164440, 328880, 3334021, 6668042, 13336084, 16670105, 26672168, 33340210, 53344336, 66680420, 133360840, 266721680]

約数ペア:

[(1, 266721680), (2, 133360840), (4, 66680420), (5, 53344336), (8, 33340210), (10, 26672168), (16, 16670105), (20, 13336084), (40, 6668042), (80, 3334021), (811, 328880), (1622, 164440), (3244, 82220), (4055, 65776), (4111, 64880), (6488, 41110), (8110, 32888), (8222, 32440), (12976, 20555), (16220, 16444)]