19778044

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 41319936

約数和(自身を除く): 21541892

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 71, 142, 143, 284, 286, 487, 572, 781, 923, 974, 1562, 1846, 1948, 3124, 3692, 5357, 6331, 10153, 10714, 12662, 20306, 21428, 25324, 34577, 40612, 69154, 69641, 138308, 139282, 278564, 380347, 449501, 760694, 899002, 1521388, 1798004, 4944511, 9889022, 19778044]

約数ペア:

[(1, 19778044), (2, 9889022), (4, 4944511), (11, 1798004), (13, 1521388), (22, 899002), (26, 760694), (44, 449501), (52, 380347), (71, 278564), (142, 139282), (143, 138308), (284, 69641), (286, 69154), (487, 40612), (572, 34577), (781, 25324), (923, 21428), (974, 20306), (1562, 12662), (1846, 10714), (1948, 10153), (3124, 6331), (3692, 5357)]