16820660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 36811152

約数和(自身を除く): 19990492

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 146, 164, 205, 281, 292, 365, 410, 562, 730, 820, 1124, 1405, 1460, 2810, 2993, 5620, 5986, 11521, 11972, 14965, 20513, 23042, 29930, 41026, 46084, 57605, 59860, 82052, 102565, 115210, 205130, 230420, 410260, 841033, 1682066, 3364132, 4205165, 8410330, 16820660]

約数ペア:

[(1, 16820660), (2, 8410330), (4, 4205165), (5, 3364132), (10, 1682066), (20, 841033), (41, 410260), (73, 230420), (82, 205130), (146, 115210), (164, 102565), (205, 82052), (281, 59860), (292, 57605), (365, 46084), (410, 41026), (562, 29930), (730, 23042), (820, 20513), (1124, 14965), (1405, 11972), (1460, 11521), (2810, 5986), (2993, 5620)]