20781150

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{10657}}^1$

素因数の和:10685

約数の個数: 48

約数和(自身を含む): 55506864

約数和(自身を除く): 34725714

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 10657, 21314, 31971, 53285, 63942, 106570, 138541, 159855, 266425, 277082, 319710, 415623, 532850, 692705, 799275, 831246, 1385410, 1598550, 2078115, 3463525, 4156230, 6927050, 10390575, 20781150]

約数ペア:

[(1, 20781150), (2, 10390575), (3, 6927050), (5, 4156230), (6, 3463525), (10, 2078115), (13, 1598550), (15, 1385410), (25, 831246), (26, 799275), (30, 692705), (39, 532850), (50, 415623), (65, 319710), (75, 277082), (78, 266425), (130, 159855), (150, 138541), (195, 106570), (325, 63942), (390, 53285), (650, 31971), (975, 21314), (1950, 10657)]