81901840

素因数分解:

$2^4\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2311}}^1$

素因数の和:2767

約数の個数: 40

約数和(自身を含む): 190934208

約数和(自身を除く): 109032368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 443, 886, 1772, 2215, 2311, 3544, 4430, 4622, 7088, 8860, 9244, 11555, 17720, 18488, 23110, 35440, 36976, 46220, 92440, 184880, 1023773, 2047546, 4095092, 5118865, 8190184, 10237730, 16380368, 20475460, 40950920, 81901840]

約数ペア:

[(1, 81901840), (2, 40950920), (4, 20475460), (5, 16380368), (8, 10237730), (10, 8190184), (16, 5118865), (20, 4095092), (40, 2047546), (80, 1023773), (443, 184880), (886, 92440), (1772, 46220), (2215, 36976), (2311, 35440), (3544, 23110), (4430, 18488), (4622, 17720), (7088, 11555), (8860, 9244)]