39997240

素因数分解:

$2^3\times 5^1\times {\mathrm{999931}}^1$

素因数の和:999942

約数の個数: 16

約数和(自身を含む): 89993880

約数和(自身を除く): 49996640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 999931, 1999862, 3999724, 4999655, 7999448, 9999310, 19998620, 39997240]

約数ペア:

[(1, 39997240), (2, 19998620), (4, 9999310), (5, 7999448), (8, 4999655), (10, 3999724), (20, 1999862), (40, 999931)]