19218823

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 24192000

約数和(自身を除く): 4973177

約数列:

[1, 13, 17, 19, 23, 199, 221, 247, 299, 323, 391, 437, 2587, 3383, 3781, 4199, 4577, 5083, 5681, 7429, 43979, 49153, 59501, 64277, 77809, 86963, 96577, 835601, 1011517, 1130519, 1478371, 19218823]

約数ペア:

[(1, 19218823), (13, 1478371), (17, 1130519), (19, 1011517), (23, 835601), (199, 96577), (221, 86963), (247, 77809), (299, 64277), (323, 59501), (391, 49153), (437, 43979), (2587, 7429), (3383, 5681), (3781, 5083), (4199, 4577)]