19709824

素因数分解:

$2^7\times {\mathrm{43}}^1\times {\mathrm{3581}}^1$

素因数の和:3638

約数の個数: 32

約数和(自身を含む): 40190040

約数和(自身を除く): 20480216

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 344, 688, 1376, 2752, 3581, 5504, 7162, 14324, 28648, 57296, 114592, 153983, 229184, 307966, 458368, 615932, 1231864, 2463728, 4927456, 9854912, 19709824]

約数ペア:

[(1, 19709824), (2, 9854912), (4, 4927456), (8, 2463728), (16, 1231864), (32, 615932), (43, 458368), (64, 307966), (86, 229184), (128, 153983), (172, 114592), (344, 57296), (688, 28648), (1376, 14324), (2752, 7162), (3581, 5504)]