51664840

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{3221}}^1$

素因数の和:3633

約数の個数: 32

約数和(自身を含む): 116571960

約数和(自身を除く): 64907120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 3221, 4010, 6442, 8020, 12884, 16040, 16105, 25768, 32210, 64420, 128840, 1291621, 2583242, 5166484, 6458105, 10332968, 12916210, 25832420, 51664840]

約数ペア:

[(1, 51664840), (2, 25832420), (4, 12916210), (5, 10332968), (8, 6458105), (10, 5166484), (20, 2583242), (40, 1291621), (401, 128840), (802, 64420), (1604, 32210), (2005, 25768), (3208, 16105), (3221, 16040), (4010, 12884), (6442, 8020)]