16589080

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{647}}^1$

素因数の和:1299

約数の個数: 32

約数和(自身を含む): 37441440

約数和(自身を除く): 20852360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 647, 1282, 1294, 2564, 2588, 3205, 3235, 5128, 5176, 6410, 6470, 12820, 12940, 25640, 25880, 414727, 829454, 1658908, 2073635, 3317816, 4147270, 8294540, 16589080]

約数ペア:

[(1, 16589080), (2, 8294540), (4, 4147270), (5, 3317816), (8, 2073635), (10, 1658908), (20, 829454), (40, 414727), (641, 25880), (647, 25640), (1282, 12940), (1294, 12820), (2564, 6470), (2588, 6410), (3205, 5176), (3235, 5128)]