18986205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2477}}^1$

素因数の和:2565

約数の個数: 32

約数和(自身を含む): 35207424

約数和(自身を除く): 16221219

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 219, 365, 511, 1095, 1533, 2477, 2555, 7431, 7665, 12385, 17339, 37155, 52017, 86695, 180821, 260085, 542463, 904105, 1265747, 2712315, 3797241, 6328735, 18986205]

約数ペア:

[(1, 18986205), (3, 6328735), (5, 3797241), (7, 2712315), (15, 1265747), (21, 904105), (35, 542463), (73, 260085), (105, 180821), (219, 86695), (365, 52017), (511, 37155), (1095, 17339), (1533, 12385), (2477, 7665), (2555, 7431)]