81817040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2833}}^1$

素因数の和:2884

約数の個数: 60

約数和(自身を含む): 200834244

約数和(自身を除く): 119017204

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 722, 760, 1444, 1520, 1805, 2833, 2888, 3610, 5666, 5776, 7220, 11332, 14165, 14440, 22664, 28330, 28880, 45328, 53827, 56660, 107654, 113320, 215308, 226640, 269135, 430616, 538270, 861232, 1022713, 1076540, 2045426, 2153080, 4090852, 4306160, 5113565, 8181704, 10227130, 16363408, 20454260, 40908520, 81817040]

約数ペア:

[(1, 81817040), (2, 40908520), (4, 20454260), (5, 16363408), (8, 10227130), (10, 8181704), (16, 5113565), (19, 4306160), (20, 4090852), (38, 2153080), (40, 2045426), (76, 1076540), (80, 1022713), (95, 861232), (152, 538270), (190, 430616), (304, 269135), (361, 226640), (380, 215308), (722, 113320), (760, 107654), (1444, 56660), (1520, 53827), (1805, 45328), (2833, 28880), (2888, 28330), (3610, 22664), (5666, 14440), (5776, 14165), (7220, 11332)]