20553260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:543

約数の個数: 96

約数和(自身を含む): 55544832

約数和(自身を除く): 34991572

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 52, 65, 70, 91, 92, 115, 130, 140, 161, 182, 230, 260, 299, 322, 364, 455, 460, 491, 598, 644, 805, 910, 982, 1196, 1495, 1610, 1820, 1964, 2093, 2455, 2990, 3220, 3437, 4186, 4910, 5980, 6383, 6874, 8372, 9820, 10465, 11293, 12766, 13748, 17185, 20930, 22586, 25532, 31915, 34370, 41860, 44681, 45172, 56465, 63830, 68740, 79051, 89362, 112930, 127660, 146809, 158102, 178724, 223405, 225860, 293618, 316204, 395255, 446810, 587236, 734045, 790510, 893620, 1027663, 1468090, 1581020, 2055326, 2936180, 4110652, 5138315, 10276630, 20553260]

約数ペア:

[(1, 20553260), (2, 10276630), (4, 5138315), (5, 4110652), (7, 2936180), (10, 2055326), (13, 1581020), (14, 1468090), (20, 1027663), (23, 893620), (26, 790510), (28, 734045), (35, 587236), (46, 446810), (52, 395255), (65, 316204), (70, 293618), (91, 225860), (92, 223405), (115, 178724), (130, 158102), (140, 146809), (161, 127660), (182, 112930), (230, 89362), (260, 79051), (299, 68740), (322, 63830), (364, 56465), (455, 45172), (460, 44681), (491, 41860), (598, 34370), (644, 31915), (805, 25532), (910, 22586), (982, 20930), (1196, 17185), (1495, 13748), (1610, 12766), (1820, 11293), (1964, 10465), (2093, 9820), (2455, 8372), (2990, 6874), (3220, 6383), (3437, 5980), (4186, 4910)]