18538970

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:590

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 16055590

約数列:

[1, 2, 5, 10, 41, 82, 103, 205, 206, 410, 439, 515, 878, 1030, 2195, 4223, 4390, 8446, 17999, 21115, 35998, 42230, 45217, 89995, 90434, 179990, 226085, 452170, 1853897, 3707794, 9269485, 18538970]

約数ペア:

[(1, 18538970), (2, 9269485), (5, 3707794), (10, 1853897), (41, 452170), (82, 226085), (103, 179990), (205, 90434), (206, 89995), (410, 45217), (439, 42230), (515, 35998), (878, 21115), (1030, 17999), (2195, 8446), (4223, 4390)]