21457408

素因数分解:

$2^9\times 7^1\times {\mathrm{5987}}^1$

素因数の和:6012

約数の個数: 40

約数和(自身を含む): 49005792

約数和(自身を除く): 27548384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1792, 3584, 5987, 11974, 23948, 41909, 47896, 83818, 95792, 167636, 191584, 335272, 383168, 670544, 766336, 1341088, 1532672, 2682176, 3065344, 5364352, 10728704, 21457408]

約数ペア:

[(1, 21457408), (2, 10728704), (4, 5364352), (7, 3065344), (8, 2682176), (14, 1532672), (16, 1341088), (28, 766336), (32, 670544), (56, 383168), (64, 335272), (112, 191584), (128, 167636), (224, 95792), (256, 83818), (448, 47896), (512, 41909), (896, 23948), (1792, 11974), (3584, 5987)]