81591040

素因数分解:

$2^8\times 5^1\times {\mathrm{63743}}^1$

素因数の和:63764

約数の個数: 36

約数和(自身を含む): 195439104

約数和(自身を除く): 113848064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 63743, 127486, 254972, 318715, 509944, 637430, 1019888, 1274860, 2039776, 2549720, 4079552, 5099440, 8159104, 10198880, 16318208, 20397760, 40795520, 81591040]

約数ペア:

[(1, 81591040), (2, 40795520), (4, 20397760), (5, 16318208), (8, 10198880), (10, 8159104), (16, 5099440), (20, 4079552), (32, 2549720), (40, 2039776), (64, 1274860), (80, 1019888), (128, 637430), (160, 509944), (256, 318715), (320, 254972), (640, 127486), (1280, 63743)]