217870420

素因数分解:

$2^2\times 5^1\times {\mathrm{1579}}^1\times {\mathrm{6899}}^1$

素因数の和:8487

約数の個数: 24

約数和(自身を含む): 457884000

約数和(自身を除く): 240013580

約数列:

[1, 2, 4, 5, 10, 20, 1579, 3158, 6316, 6899, 7895, 13798, 15790, 27596, 31580, 34495, 68990, 137980, 10893521, 21787042, 43574084, 54467605, 108935210, 217870420]

約数ペア:

[(1, 217870420), (2, 108935210), (4, 54467605), (5, 43574084), (10, 21787042), (20, 10893521), (1579, 137980), (3158, 68990), (6316, 34495), (6899, 31580), (7895, 27596), (13798, 15790)]