20478290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9437}}^1$

素因数の和:9482

約数の個数: 32

約数和(自身を含む): 43490304

約数和(自身を除く): 23012014

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9437, 18874, 47185, 66059, 94370, 132118, 292547, 330295, 585094, 660590, 1462735, 2047829, 2925470, 4095658, 10239145, 20478290]

約数ペア:

[(1, 20478290), (2, 10239145), (5, 4095658), (7, 2925470), (10, 2047829), (14, 1462735), (31, 660590), (35, 585094), (62, 330295), (70, 292547), (155, 132118), (217, 94370), (310, 66059), (434, 47185), (1085, 18874), (2170, 9437)]