20617984

素因数分解:

$2^8\times {\mathrm{43}}^1\times {\mathrm{1873}}^1$

素因数の和:1932

約数の個数: 36

約数和(自身を含む): 42135016

約数和(自身を除く): 21517032

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 688, 1376, 1873, 2752, 3746, 5504, 7492, 11008, 14984, 29968, 59936, 80539, 119872, 161078, 239744, 322156, 479488, 644312, 1288624, 2577248, 5154496, 10308992, 20617984]

約数ペア:

[(1, 20617984), (2, 10308992), (4, 5154496), (8, 2577248), (16, 1288624), (32, 644312), (43, 479488), (64, 322156), (86, 239744), (128, 161078), (172, 119872), (256, 80539), (344, 59936), (688, 29968), (1376, 14984), (1873, 11008), (2752, 7492), (3746, 5504)]