16486520

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{643}}^1$

素因数の和:1295

約数の個数: 32

約数和(自身を含む): 37210320

約数和(自身を除く): 20723800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 643, 1282, 1286, 2564, 2572, 3205, 3215, 5128, 5144, 6410, 6430, 12820, 12860, 25640, 25720, 412163, 824326, 1648652, 2060815, 3297304, 4121630, 8243260, 16486520]

約数ペア:

[(1, 16486520), (2, 8243260), (4, 4121630), (5, 3297304), (8, 2060815), (10, 1648652), (20, 824326), (40, 412163), (641, 25720), (643, 25640), (1282, 12860), (1286, 12820), (2564, 6430), (2572, 6410), (3205, 5144), (3215, 5128)]