20154896

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{397}}^1$

素因数の和:591

約数の個数: 40

約数和(自身を含む): 41455680

約数和(自身を除く): 21300784

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 167, 304, 334, 397, 668, 794, 1336, 1588, 2672, 3173, 3176, 6346, 6352, 7543, 12692, 15086, 25384, 30172, 50768, 60344, 66299, 120688, 132598, 265196, 530392, 1060784, 1259681, 2519362, 5038724, 10077448, 20154896]

約数ペア:

[(1, 20154896), (2, 10077448), (4, 5038724), (8, 2519362), (16, 1259681), (19, 1060784), (38, 530392), (76, 265196), (152, 132598), (167, 120688), (304, 66299), (334, 60344), (397, 50768), (668, 30172), (794, 25384), (1336, 15086), (1588, 12692), (2672, 7543), (3173, 6352), (3176, 6346)]