19475920

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1777}}^1$

素因数の和:1927

約数の個数: 40

約数和(自身を含む): 45637704

約数和(自身を除く): 26161784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1777, 2192, 2740, 3554, 5480, 7108, 8885, 10960, 14216, 17770, 28432, 35540, 71080, 142160, 243449, 486898, 973796, 1217245, 1947592, 2434490, 3895184, 4868980, 9737960, 19475920]

約数ペア:

[(1, 19475920), (2, 9737960), (4, 4868980), (5, 3895184), (8, 2434490), (10, 1947592), (16, 1217245), (20, 973796), (40, 486898), (80, 243449), (137, 142160), (274, 71080), (548, 35540), (685, 28432), (1096, 17770), (1370, 14216), (1777, 10960), (2192, 8885), (2740, 7108), (3554, 5480)]