2151555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:707

約数の個数: 32

約数和(自身を含む): 4067328

約数和(自身を除く): 1915773

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 661, 1085, 1983, 3255, 3305, 4627, 9915, 13881, 20491, 23135, 61473, 69405, 102455, 143437, 307365, 430311, 717185, 2151555]

約数ペア:

[(1, 2151555), (3, 717185), (5, 430311), (7, 307365), (15, 143437), (21, 102455), (31, 69405), (35, 61473), (93, 23135), (105, 20491), (155, 13881), (217, 9915), (465, 4627), (651, 3305), (661, 3255), (1085, 1983)]