18706168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 39077640

約数和(自身を除く): 20371472

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 82, 104, 107, 164, 214, 328, 428, 533, 856, 1066, 1391, 1681, 2132, 2782, 3362, 4264, 4387, 5564, 6724, 8774, 11128, 13448, 17548, 21853, 35096, 43706, 57031, 87412, 114062, 174824, 179867, 228124, 359734, 456248, 719468, 1438936, 2338271, 4676542, 9353084, 18706168]

約数ペア:

[(1, 18706168), (2, 9353084), (4, 4676542), (8, 2338271), (13, 1438936), (26, 719468), (41, 456248), (52, 359734), (82, 228124), (104, 179867), (107, 174824), (164, 114062), (214, 87412), (328, 57031), (428, 43706), (533, 35096), (856, 21853), (1066, 17548), (1391, 13448), (1681, 11128), (2132, 8774), (2782, 6724), (3362, 5564), (4264, 4387)]