81362920

素因数分解:

$2^3\times 5^1\times {\mathrm{1093}}^1\times {\mathrm{1861}}^1$

素因数の和:2965

約数の個数: 32

約数和(自身を含む): 183332520

約数和(自身を除く): 101969600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1093, 1861, 2186, 3722, 4372, 5465, 7444, 8744, 9305, 10930, 14888, 18610, 21860, 37220, 43720, 74440, 2034073, 4068146, 8136292, 10170365, 16272584, 20340730, 40681460, 81362920]

約数ペア:

[(1, 81362920), (2, 40681460), (4, 20340730), (5, 16272584), (8, 10170365), (10, 8136292), (20, 4068146), (40, 2034073), (1093, 74440), (1861, 43720), (2186, 37220), (3722, 21860), (4372, 18610), (5465, 14888), (7444, 10930), (8744, 9305)]