256515585

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1\times {\mathrm{1201}}^1$

素因数の和:1729

約数の個数: 32

約数和(自身を含む): 425796480

約数和(自身を除く): 169280895

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 491, 1201, 1473, 2455, 3603, 6005, 7365, 14239, 18015, 34829, 42717, 71195, 104487, 174145, 213585, 522435, 589691, 1769073, 2948455, 8845365, 17101039, 51303117, 85505195, 256515585]

約数ペア:

[(1, 256515585), (3, 85505195), (5, 51303117), (15, 17101039), (29, 8845365), (87, 2948455), (145, 1769073), (435, 589691), (491, 522435), (1201, 213585), (1473, 174145), (2455, 104487), (3603, 71195), (6005, 42717), (7365, 34829), (14239, 18015)]