129121280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{25219}}^1$

素因数の和:25244

約数の個数: 44

約数和(自身を含む): 309752040

約数和(自身を除く): 180630760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 25219, 50438, 100876, 126095, 201752, 252190, 403504, 504380, 807008, 1008760, 1614016, 2017520, 3228032, 4035040, 6456064, 8070080, 12912128, 16140160, 25824256, 32280320, 64560640, 129121280]

約数ペア:

[(1, 129121280), (2, 64560640), (4, 32280320), (5, 25824256), (8, 16140160), (10, 12912128), (16, 8070080), (20, 6456064), (32, 4035040), (40, 3228032), (64, 2017520), (80, 1614016), (128, 1008760), (160, 807008), (256, 504380), (320, 403504), (512, 252190), (640, 201752), (1024, 126095), (1280, 100876), (2560, 50438), (5120, 25219)]