21817856

素因数分解:

$2^9\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1052

約数の個数: 40

約数和(自身を含む): 44651904

約数和(自身を除く): 22834048

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 512, 688, 991, 1376, 1982, 2752, 3964, 5504, 7928, 11008, 15856, 22016, 31712, 42613, 63424, 85226, 126848, 170452, 253696, 340904, 507392, 681808, 1363616, 2727232, 5454464, 10908928, 21817856]

約数ペア:

[(1, 21817856), (2, 10908928), (4, 5454464), (8, 2727232), (16, 1363616), (32, 681808), (43, 507392), (64, 340904), (86, 253696), (128, 170452), (172, 126848), (256, 85226), (344, 63424), (512, 42613), (688, 31712), (991, 22016), (1376, 15856), (1982, 11008), (2752, 7928), (3964, 5504)]