20205003

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 34409760

約数和(自身を除く): 14204757

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 97, 109, 147, 273, 291, 327, 637, 679, 763, 1261, 1417, 1911, 2037, 2289, 3783, 4251, 4753, 5341, 8827, 9919, 10573, 14259, 16023, 26481, 29757, 31719, 61789, 69433, 74011, 137449, 185367, 208299, 222033, 412347, 518077, 962143, 1554231, 2886429, 6735001, 20205003]

約数ペア:

[(1, 20205003), (3, 6735001), (7, 2886429), (13, 1554231), (21, 962143), (39, 518077), (49, 412347), (91, 222033), (97, 208299), (109, 185367), (147, 137449), (273, 74011), (291, 69433), (327, 61789), (637, 31719), (679, 29757), (763, 26481), (1261, 16023), (1417, 14259), (1911, 10573), (2037, 9919), (2289, 8827), (3783, 5341), (4251, 4753)]