28401880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{283}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 69420960

約数和(自身を除く): 41019080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 193, 260, 283, 386, 520, 566, 772, 965, 1132, 1415, 1544, 1930, 2264, 2509, 2830, 3679, 3860, 5018, 5660, 7358, 7720, 10036, 11320, 12545, 14716, 18395, 20072, 25090, 29432, 36790, 50180, 54619, 73580, 100360, 109238, 147160, 218476, 273095, 436952, 546190, 710047, 1092380, 1420094, 2184760, 2840188, 3550235, 5680376, 7100470, 14200940, 28401880]

約数ペア:

[(1, 28401880), (2, 14200940), (4, 7100470), (5, 5680376), (8, 3550235), (10, 2840188), (13, 2184760), (20, 1420094), (26, 1092380), (40, 710047), (52, 546190), (65, 436952), (104, 273095), (130, 218476), (193, 147160), (260, 109238), (283, 100360), (386, 73580), (520, 54619), (566, 50180), (772, 36790), (965, 29432), (1132, 25090), (1415, 20072), (1544, 18395), (1930, 14716), (2264, 12545), (2509, 11320), (2830, 10036), (3679, 7720), (3860, 7358), (5018, 5660)]