19871306

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2663}}^1$

素因数の和:2726

約数の個数: 32

約数和(自身を含む): 37594368

約数和(自身を除く): 17723062

約数列:

[1, 2, 7, 13, 14, 26, 41, 82, 91, 182, 287, 533, 574, 1066, 2663, 3731, 5326, 7462, 18641, 34619, 37282, 69238, 109183, 218366, 242333, 484666, 764281, 1419379, 1528562, 2838758, 9935653, 19871306]

約数ペア:

[(1, 19871306), (2, 9935653), (7, 2838758), (13, 1528562), (14, 1419379), (26, 764281), (41, 484666), (82, 242333), (91, 218366), (182, 109183), (287, 69238), (533, 37282), (574, 34619), (1066, 18641), (2663, 7462), (3731, 5326)]