28557855

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 52715520

約数和(自身を除く): 24157665

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 127, 171, 263, 285, 381, 635, 789, 855, 1143, 1315, 1905, 2367, 2413, 3945, 4997, 5715, 7239, 11835, 12065, 14991, 21717, 24985, 33401, 36195, 44973, 74955, 100203, 108585, 167005, 224865, 300609, 501015, 634619, 1503045, 1903857, 3173095, 5711571, 9519285, 28557855]

約数ペア:

[(1, 28557855), (3, 9519285), (5, 5711571), (9, 3173095), (15, 1903857), (19, 1503045), (45, 634619), (57, 501015), (95, 300609), (127, 224865), (171, 167005), (263, 108585), (285, 100203), (381, 74955), (635, 44973), (789, 36195), (855, 33401), (1143, 24985), (1315, 21717), (1905, 14991), (2367, 12065), (2413, 11835), (3945, 7239), (4997, 5715)]