28121805

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1061}}^1$

素因数の和:1122

約数の個数: 48

約数和(自身を含む): 53015040

約数和(自身を除く): 24893235

約数列:

[1, 3, 5, 9, 15, 19, 31, 45, 57, 93, 95, 155, 171, 279, 285, 465, 589, 855, 1061, 1395, 1767, 2945, 3183, 5301, 5305, 8835, 9549, 15915, 20159, 26505, 32891, 47745, 60477, 98673, 100795, 164455, 181431, 296019, 302385, 493365, 624929, 907155, 1480095, 1874787, 3124645, 5624361, 9373935, 28121805]

約数ペア:

[(1, 28121805), (3, 9373935), (5, 5624361), (9, 3124645), (15, 1874787), (19, 1480095), (31, 907155), (45, 624929), (57, 493365), (93, 302385), (95, 296019), (155, 181431), (171, 164455), (279, 100795), (285, 98673), (465, 60477), (589, 47745), (855, 32891), (1061, 26505), (1395, 20159), (1767, 15915), (2945, 9549), (3183, 8835), (5301, 5305)]