71350280

素因数分解:

$2^3\times 5^1\times {\mathrm{887}}^1\times {\mathrm{2011}}^1$

素因数の和:2909

約数の個数: 32

約数和(自身を含む): 160799040

約数和(自身を除く): 89448760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 887, 1774, 2011, 3548, 4022, 4435, 7096, 8044, 8870, 10055, 16088, 17740, 20110, 35480, 40220, 80440, 1783757, 3567514, 7135028, 8918785, 14270056, 17837570, 35675140, 71350280]

約数ペア:

[(1, 71350280), (2, 35675140), (4, 17837570), (5, 14270056), (8, 8918785), (10, 7135028), (20, 3567514), (40, 1783757), (887, 80440), (1774, 40220), (2011, 35480), (3548, 20110), (4022, 17740), (4435, 16088), (7096, 10055), (8044, 8870)]