21287936

素因数分解:

$2^{10}\times {\mathrm{20789}}^1$

素因数の和:20809

約数の個数: 22

約数和(自身を含む): 42557130

約数和(自身を除く): 21269194

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 20789, 41578, 83156, 166312, 332624, 665248, 1330496, 2660992, 5321984, 10643968, 21287936]

約数ペア:

[(1, 21287936), (2, 10643968), (4, 5321984), (8, 2660992), (16, 1330496), (32, 665248), (64, 332624), (128, 166312), (256, 83156), (512, 41578), (1024, 20789)]