20740377

素因数分解:

$3^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{709}}^1$

素因数の和:925

約数の個数: 24

約数和(自身を含む): 32376000

約数和(自身を除く): 11635623

約数列:

[1, 3, 7, 21, 49, 147, 199, 597, 709, 1393, 2127, 4179, 4963, 9751, 14889, 29253, 34741, 104223, 141091, 423273, 987637, 2962911, 6913459, 20740377]

約数ペア:

[(1, 20740377), (3, 6913459), (7, 2962911), (21, 987637), (49, 423273), (147, 141091), (199, 104223), (597, 34741), (709, 29253), (1393, 14889), (2127, 9751), (4179, 4963)]