21820969905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{2837}}^1$

素因数の和:3039

約数の個数: 128

約数和(自身を含む): 43940413440

約数和(自身を除く): 22119443535

約数列:

[1, 3, 5, 7, 15, 17, 21, 31, 35, 51, 85, 93, 105, 119, 139, 155, 217, 255, 357, 417, 465, 527, 595, 651, 695, 973, 1085, 1581, 1785, 2085, 2363, 2635, 2837, 2919, 3255, 3689, 4309, 4865, 7089, 7905, 8511, 11067, 11815, 12927, 14185, 14595, 16541, 18445, 19859, 21545, 30163, 35445, 42555, 48229, 49623, 55335, 59577, 64635, 73253, 82705, 87947, 90489, 99295, 144687, 150815, 219759, 241145, 248115, 263841, 297885, 337603, 366265, 394343, 439735, 452445, 512771, 615629, 723435, 1012809, 1098795, 1183029, 1319205, 1495099, 1538313, 1688015, 1846887, 1971715, 2563855, 2760401, 3078145, 4485297, 5064045, 5915145, 6703831, 7475495, 7691565, 8281203, 9234435, 10465693, 12224633, 13802005, 20111493, 22426485, 31397079, 33519155, 36673899, 41406015, 46926817, 52328465, 61123165, 85572431, 100557465, 140780451, 156985395, 183369495, 207818761, 234634085, 256717293, 427862155, 623456283, 703902255, 1039093805, 1283586465, 1454731327, 3117281415, 4364193981, 7273656635, 21820969905]

約数ペア:

[(1, 21820969905), (3, 7273656635), (5, 4364193981), (7, 3117281415), (15, 1454731327), (17, 1283586465), (21, 1039093805), (31, 703902255), (35, 623456283), (51, 427862155), (85, 256717293), (93, 234634085), (105, 207818761), (119, 183369495), (139, 156985395), (155, 140780451), (217, 100557465), (255, 85572431), (357, 61123165), (417, 52328465), (465, 46926817), (527, 41406015), (595, 36673899), (651, 33519155), (695, 31397079), (973, 22426485), (1085, 20111493), (1581, 13802005), (1785, 12224633), (2085, 10465693), (2363, 9234435), (2635, 8281203), (2837, 7691565), (2919, 7475495), (3255, 6703831), (3689, 5915145), (4309, 5064045), (4865, 4485297), (7089, 3078145), (7905, 2760401), (8511, 2563855), (11067, 1971715), (11815, 1846887), (12927, 1688015), (14185, 1538313), (14595, 1495099), (16541, 1319205), (18445, 1183029), (19859, 1098795), (21545, 1012809), (30163, 723435), (35445, 615629), (42555, 512771), (48229, 452445), (49623, 439735), (55335, 394343), (59577, 366265), (64635, 337603), (73253, 297885), (82705, 263841), (87947, 248115), (90489, 241145), (99295, 219759), (144687, 150815)]