21019004

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{3001}}^1$

素因数の和:3125

約数の個数: 24

約数和(自身を含む): 39338208

約数和(自身を除く): 18319204

約数列:

[1, 2, 4, 17, 34, 68, 103, 206, 412, 1751, 3001, 3502, 6002, 7004, 12004, 51017, 102034, 204068, 309103, 618206, 1236412, 5254751, 10509502, 21019004]

約数ペア:

[(1, 21019004), (2, 10509502), (4, 5254751), (17, 1236412), (34, 618206), (68, 309103), (103, 204068), (206, 102034), (412, 51017), (1751, 12004), (3001, 7004), (3502, 6002)]