20881504

素因数分解:

$2^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1277}}^1$

素因数の和:1367

約数の個数: 48

約数和(自身を含む): 47664288

約数和(自身を除く): 26782784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 73, 112, 146, 224, 292, 511, 584, 1022, 1168, 1277, 2044, 2336, 2554, 4088, 5108, 8176, 8939, 10216, 16352, 17878, 20432, 35756, 40864, 71512, 93221, 143024, 186442, 286048, 372884, 652547, 745768, 1305094, 1491536, 2610188, 2983072, 5220376, 10440752, 20881504]

約数ペア:

[(1, 20881504), (2, 10440752), (4, 5220376), (7, 2983072), (8, 2610188), (14, 1491536), (16, 1305094), (28, 745768), (32, 652547), (56, 372884), (73, 286048), (112, 186442), (146, 143024), (224, 93221), (292, 71512), (511, 40864), (584, 35756), (1022, 20432), (1168, 17878), (1277, 16352), (2044, 10216), (2336, 8939), (2554, 8176), (4088, 5108)]