808101040

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{10193}}^1$

素因数の和:11197

約数の個数: 40

約数和(自身を含む): 1880915328

約数和(自身を除く): 1072814288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1982, 3964, 4955, 7928, 9910, 10193, 15856, 19820, 20386, 39640, 40772, 50965, 79280, 81544, 101930, 163088, 203860, 407720, 815440, 10101263, 20202526, 40405052, 50506315, 80810104, 101012630, 161620208, 202025260, 404050520, 808101040]

約数ペア:

[(1, 808101040), (2, 404050520), (4, 202025260), (5, 161620208), (8, 101012630), (10, 80810104), (16, 50506315), (20, 40405052), (40, 20202526), (80, 10101263), (991, 815440), (1982, 407720), (3964, 203860), (4955, 163088), (7928, 101930), (9910, 81544), (10193, 79280), (15856, 50965), (19820, 40772), (20386, 39640)]