19908428

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{811}}^1$

素因数の和:870

約数の個数: 36

約数和(自身を含む): 38980872

約数和(自身を除く): 19072444

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 361, 646, 722, 811, 1292, 1444, 1622, 3244, 6137, 12274, 13787, 15409, 24548, 27574, 30818, 55148, 61636, 261953, 292771, 523906, 585542, 1047812, 1171084, 4977107, 9954214, 19908428]

約数ペア:

[(1, 19908428), (2, 9954214), (4, 4977107), (17, 1171084), (19, 1047812), (34, 585542), (38, 523906), (68, 292771), (76, 261953), (323, 61636), (361, 55148), (646, 30818), (722, 27574), (811, 24548), (1292, 15409), (1444, 13787), (1622, 12274), (3244, 6137)]