87401781

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{359}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 132710400

約数和(自身を除く): 45308619

約数列:

[1, 3, 9, 27, 71, 127, 213, 359, 381, 639, 1077, 1143, 1917, 3231, 3429, 9017, 9693, 25489, 27051, 45593, 76467, 81153, 136779, 229401, 243459, 410337, 688203, 1231011, 3237103, 9711309, 29133927, 87401781]

約数ペア:

[(1, 87401781), (3, 29133927), (9, 9711309), (27, 3237103), (71, 1231011), (127, 688203), (213, 410337), (359, 243459), (381, 229401), (639, 136779), (1077, 81153), (1143, 76467), (1917, 45593), (3231, 27051), (3429, 25489), (9017, 9693)]