81403420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{3361}}^1$

素因数の和:3550

約数の個数: 48

約数和(自身を含む): 196555968

約数和(自身を除く): 115152548

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 865, 1211, 1730, 2422, 3361, 3460, 4844, 6055, 6722, 12110, 13444, 16805, 23527, 24220, 33610, 47054, 67220, 94108, 117635, 235270, 470540, 581453, 1162906, 2325812, 2907265, 4070171, 5814530, 8140342, 11629060, 16280684, 20350855, 40701710, 81403420]

約数ペア:

[(1, 81403420), (2, 40701710), (4, 20350855), (5, 16280684), (7, 11629060), (10, 8140342), (14, 5814530), (20, 4070171), (28, 2907265), (35, 2325812), (70, 1162906), (140, 581453), (173, 470540), (346, 235270), (692, 117635), (865, 94108), (1211, 67220), (1730, 47054), (2422, 33610), (3361, 24220), (3460, 23527), (4844, 16805), (6055, 13444), (6722, 12110)]