209121280

素因数分解:

$2^{12}\times 5^1\times {\mathrm{10211}}^1$

素因数の和:10240

約数の個数: 52

約数和(自身を含む): 501878952

約数和(自身を除く): 292757672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 10211, 10240, 20422, 20480, 40844, 51055, 81688, 102110, 163376, 204220, 326752, 408440, 653504, 816880, 1307008, 1633760, 2614016, 3267520, 5228032, 6535040, 10456064, 13070080, 20912128, 26140160, 41824256, 52280320, 104560640, 209121280]

約数ペア:

[(1, 209121280), (2, 104560640), (4, 52280320), (5, 41824256), (8, 26140160), (10, 20912128), (16, 13070080), (20, 10456064), (32, 6535040), (40, 5228032), (64, 3267520), (80, 2614016), (128, 1633760), (160, 1307008), (256, 816880), (320, 653504), (512, 408440), (640, 326752), (1024, 204220), (1280, 163376), (2048, 102110), (2560, 81688), (4096, 51055), (5120, 40844), (10211, 20480), (10240, 20422)]