646656

素因数分解:

$2^9\times 3^1\times {\mathrm{421}}^1$

素因数の和:442

約数の個数: 40

約数和(自身を含む): 1726824

約数和(自身を除く): 1080168

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 421, 512, 768, 842, 1263, 1536, 1684, 2526, 3368, 5052, 6736, 10104, 13472, 20208, 26944, 40416, 53888, 80832, 107776, 161664, 215552, 323328, 646656]

約数ペア:

[(1, 646656), (2, 323328), (3, 215552), (4, 161664), (6, 107776), (8, 80832), (12, 53888), (16, 40416), (24, 26944), (32, 20208), (48, 13472), (64, 10104), (96, 6736), (128, 5052), (192, 3368), (256, 2526), (384, 1684), (421, 1536), (512, 1263), (768, 842)]