19913511

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 29515968

約数和(自身を除く): 9602457

約数列:

[1, 3, 17, 37, 51, 61, 111, 173, 183, 519, 629, 1037, 1887, 2257, 2941, 3111, 6401, 6771, 8823, 10553, 19203, 31659, 38369, 108817, 115107, 179401, 326451, 390461, 538203, 1171383, 6637837, 19913511]

約数ペア:

[(1, 19913511), (3, 6637837), (17, 1171383), (37, 538203), (51, 390461), (61, 326451), (111, 179401), (173, 115107), (183, 108817), (519, 38369), (629, 31659), (1037, 19203), (1887, 10553), (2257, 8823), (2941, 6771), (3111, 6401)]