21051904

素因数分解:

$2^9\times {\mathrm{41117}}^1$

素因数の和:41135

約数の個数: 20

約数和(自身を含む): 42063714

約数和(自身を除く): 21011810

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 41117, 82234, 164468, 328936, 657872, 1315744, 2631488, 5262976, 10525952, 21051904]

約数ペア:

[(1, 21051904), (2, 10525952), (4, 5262976), (8, 2631488), (16, 1315744), (32, 657872), (64, 328936), (128, 164468), (256, 82234), (512, 41117)]