2155755

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{419}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 4032000

約数和(自身を除く): 1876245

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 419, 735, 1029, 1257, 1715, 2095, 2933, 5145, 6285, 8799, 14665, 20531, 43995, 61593, 102655, 143717, 307965, 431151, 718585, 2155755]

約数ペア:

[(1, 2155755), (3, 718585), (5, 431151), (7, 307965), (15, 143717), (21, 102655), (35, 61593), (49, 43995), (105, 20531), (147, 14665), (245, 8799), (343, 6285), (419, 5145), (735, 2933), (1029, 2095), (1257, 1715)]