812795320

素因数分解:

$2^3\times 5^1\times {\mathrm{2161}}^1\times {\mathrm{9403}}^1$

素因数の和:11575

約数の個数: 32

約数和(自身を含む): 1829830320

約数和(自身を除く): 1017035000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2161, 4322, 8644, 9403, 10805, 17288, 18806, 21610, 37612, 43220, 47015, 75224, 86440, 94030, 188060, 376120, 20319883, 40639766, 81279532, 101599415, 162559064, 203198830, 406397660, 812795320]

約数ペア:

[(1, 812795320), (2, 406397660), (4, 203198830), (5, 162559064), (8, 101599415), (10, 81279532), (20, 40639766), (40, 20319883), (2161, 376120), (4322, 188060), (8644, 94030), (9403, 86440), (10805, 75224), (17288, 47015), (18806, 43220), (21610, 37612)]