21676460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{317}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 49363776

約数和(自身を除く): 27687316

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 263, 317, 526, 634, 1052, 1268, 1315, 1585, 2630, 3170, 3419, 4121, 5260, 6340, 6838, 8242, 13676, 16484, 17095, 20605, 34190, 41210, 68380, 82420, 83371, 166742, 333484, 416855, 833710, 1083823, 1667420, 2167646, 4335292, 5419115, 10838230, 21676460]

約数ペア:

[(1, 21676460), (2, 10838230), (4, 5419115), (5, 4335292), (10, 2167646), (13, 1667420), (20, 1083823), (26, 833710), (52, 416855), (65, 333484), (130, 166742), (260, 83371), (263, 82420), (317, 68380), (526, 41210), (634, 34190), (1052, 20605), (1268, 17095), (1315, 16484), (1585, 13676), (2630, 8242), (3170, 6838), (3419, 6340), (4121, 5260)]