19887956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{163}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 39674880

約数和(自身を除く): 19786924

約数列:

[1, 2, 4, 11, 22, 44, 47, 59, 94, 118, 163, 188, 236, 326, 517, 649, 652, 1034, 1298, 1793, 2068, 2596, 2773, 3586, 5546, 7172, 7661, 9617, 11092, 15322, 19234, 30503, 30644, 38468, 61006, 84271, 105787, 122012, 168542, 211574, 337084, 423148, 451999, 903998, 1807996, 4971989, 9943978, 19887956]

約数ペア:

[(1, 19887956), (2, 9943978), (4, 4971989), (11, 1807996), (22, 903998), (44, 451999), (47, 423148), (59, 337084), (94, 211574), (118, 168542), (163, 122012), (188, 105787), (236, 84271), (326, 61006), (517, 38468), (649, 30644), (652, 30503), (1034, 19234), (1298, 15322), (1793, 11092), (2068, 9617), (2596, 7661), (2773, 7172), (3586, 5546)]