19964490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:204

約数の個数: 128

約数和(自身を含む): 60383232

約数和(自身を除く): 40418742

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 71, 78, 91, 103, 105, 130, 142, 182, 195, 206, 210, 213, 273, 309, 355, 390, 426, 455, 497, 515, 546, 618, 710, 721, 910, 923, 994, 1030, 1065, 1339, 1365, 1442, 1491, 1545, 1846, 2130, 2163, 2485, 2678, 2730, 2769, 2982, 3090, 3605, 4017, 4326, 4615, 4970, 5538, 6461, 6695, 7210, 7313, 7455, 8034, 9230, 9373, 10815, 12922, 13390, 13845, 14626, 14910, 18746, 19383, 20085, 21630, 21939, 27690, 28119, 32305, 36565, 38766, 40170, 43878, 46865, 51191, 56238, 64610, 73130, 93730, 95069, 96915, 102382, 109695, 140595, 153573, 190138, 193830, 219390, 255955, 281190, 285207, 307146, 475345, 511910, 570414, 665483, 767865, 950690, 1330966, 1426035, 1535730, 1996449, 2852070, 3327415, 3992898, 6654830, 9982245, 19964490]

約数ペア:

[(1, 19964490), (2, 9982245), (3, 6654830), (5, 3992898), (6, 3327415), (7, 2852070), (10, 1996449), (13, 1535730), (14, 1426035), (15, 1330966), (21, 950690), (26, 767865), (30, 665483), (35, 570414), (39, 511910), (42, 475345), (65, 307146), (70, 285207), (71, 281190), (78, 255955), (91, 219390), (103, 193830), (105, 190138), (130, 153573), (142, 140595), (182, 109695), (195, 102382), (206, 96915), (210, 95069), (213, 93730), (273, 73130), (309, 64610), (355, 56238), (390, 51191), (426, 46865), (455, 43878), (497, 40170), (515, 38766), (546, 36565), (618, 32305), (710, 28119), (721, 27690), (910, 21939), (923, 21630), (994, 20085), (1030, 19383), (1065, 18746), (1339, 14910), (1365, 14626), (1442, 13845), (1491, 13390), (1545, 12922), (1846, 10815), (2130, 9373), (2163, 9230), (2485, 8034), (2678, 7455), (2730, 7313), (2769, 7210), (2982, 6695), (3090, 6461), (3605, 5538), (4017, 4970), (4326, 4615)]