19739740

素因数分解:

$2^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1217}}^1$

素因数の和:2037

約数の個数: 24

約数和(自身を含む): 41538672

約数和(自身を除く): 21798932

約数列:

[1, 2, 4, 5, 10, 20, 811, 1217, 1622, 2434, 3244, 4055, 4868, 6085, 8110, 12170, 16220, 24340, 986987, 1973974, 3947948, 4934935, 9869870, 19739740]

約数ペア:

[(1, 19739740), (2, 9869870), (4, 4934935), (5, 3947948), (10, 1973974), (20, 986987), (811, 24340), (1217, 16220), (1622, 12170), (2434, 8110), (3244, 6085), (4055, 4868)]