399702920

素因数分解:

$2^3\times 5^1\times {\mathrm{1097}}^1\times {\mathrm{9109}}^1$

素因数の和:10217

約数の個数: 32

約数和(自身を含む): 900250200

約数和(自身を除く): 500547280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1097, 2194, 4388, 5485, 8776, 9109, 10970, 18218, 21940, 36436, 43880, 45545, 72872, 91090, 182180, 364360, 9992573, 19985146, 39970292, 49962865, 79940584, 99925730, 199851460, 399702920]

約数ペア:

[(1, 399702920), (2, 199851460), (4, 99925730), (5, 79940584), (8, 49962865), (10, 39970292), (20, 19985146), (40, 9992573), (1097, 364360), (2194, 182180), (4388, 91090), (5485, 72872), (8776, 45545), (9109, 43880), (10970, 36436), (18218, 21940)]