21637210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3001}}^1$

素因数の和:3118

約数の個数: 32

約数和(自身を含む): 44957952

約数和(自身を除く): 23320742

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 103, 206, 515, 721, 1030, 1442, 3001, 3605, 6002, 7210, 15005, 21007, 30010, 42014, 105035, 210070, 309103, 618206, 1545515, 2163721, 3091030, 4327442, 10818605, 21637210]

約数ペア:

[(1, 21637210), (2, 10818605), (5, 4327442), (7, 3091030), (10, 2163721), (14, 1545515), (35, 618206), (70, 309103), (103, 210070), (206, 105035), (515, 42014), (721, 30010), (1030, 21007), (1442, 15005), (3001, 7210), (3605, 6002)]