28133505

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 51087504

約数和(自身を除く): 22953999

約数列:

[1, 3, 5, 9, 15, 37, 45, 61, 111, 183, 185, 277, 305, 333, 549, 555, 831, 915, 1385, 1665, 2257, 2493, 2745, 4155, 6771, 10249, 11285, 12465, 16897, 20313, 30747, 33855, 50691, 51245, 84485, 92241, 101565, 152073, 153735, 253455, 461205, 625189, 760365, 1875567, 3125945, 5626701, 9377835, 28133505]

約数ペア:

[(1, 28133505), (3, 9377835), (5, 5626701), (9, 3125945), (15, 1875567), (37, 760365), (45, 625189), (61, 461205), (111, 253455), (183, 153735), (185, 152073), (277, 101565), (305, 92241), (333, 84485), (549, 51245), (555, 50691), (831, 33855), (915, 30747), (1385, 20313), (1665, 16897), (2257, 12465), (2493, 11285), (2745, 10249), (4155, 6771)]