21590128

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4483}}^1$

素因数の和:4541

約数の個数: 40

約数和(自身を含む): 48929408

約数和(自身を除く): 27339280

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4483, 4816, 8966, 17932, 31381, 35864, 62762, 71728, 125524, 192769, 251048, 385538, 502096, 771076, 1349383, 1542152, 2698766, 3084304, 5397532, 10795064, 21590128]

約数ペア:

[(1, 21590128), (2, 10795064), (4, 5397532), (7, 3084304), (8, 2698766), (14, 1542152), (16, 1349383), (28, 771076), (43, 502096), (56, 385538), (86, 251048), (112, 192769), (172, 125524), (301, 71728), (344, 62762), (602, 35864), (688, 31381), (1204, 17932), (2408, 8966), (4483, 4816)]