1639148540

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{829}}^1\times {\mathrm{907}}^1$

素因数の和:1854

約数の個数: 48

約数和(自身を含む): 3481816800

約数和(自身を除く): 1842668260

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 829, 907, 1090, 1658, 1814, 2180, 3316, 3628, 4145, 4535, 8290, 9070, 16580, 18140, 90361, 98863, 180722, 197726, 361444, 395452, 451805, 494315, 751903, 903610, 988630, 1503806, 1807220, 1977260, 3007612, 3759515, 7519030, 15038060, 81957427, 163914854, 327829708, 409787135, 819574270, 1639148540]

約数ペア:

[(1, 1639148540), (2, 819574270), (4, 409787135), (5, 327829708), (10, 163914854), (20, 81957427), (109, 15038060), (218, 7519030), (436, 3759515), (545, 3007612), (829, 1977260), (907, 1807220), (1090, 1503806), (1658, 988630), (1814, 903610), (2180, 751903), (3316, 494315), (3628, 451805), (4145, 395452), (4535, 361444), (8290, 197726), (9070, 180722), (16580, 98863), (18140, 90361)]