21756592

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:326

約数の個数: 80

約数和(自身を含む): 51059232

約数和(自身を除く): 29302640

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 37, 44, 52, 74, 88, 104, 143, 148, 176, 208, 257, 286, 296, 407, 481, 514, 572, 592, 814, 962, 1028, 1144, 1628, 1924, 2056, 2288, 2827, 3256, 3341, 3848, 4112, 5291, 5654, 6512, 6682, 7696, 9509, 10582, 11308, 13364, 19018, 21164, 22616, 26728, 36751, 38036, 42328, 45232, 53456, 73502, 76072, 84656, 104599, 123617, 147004, 152144, 209198, 247234, 294008, 418396, 494468, 588016, 836792, 988936, 1359787, 1673584, 1977872, 2719574, 5439148, 10878296, 21756592]

約数ペア:

[(1, 21756592), (2, 10878296), (4, 5439148), (8, 2719574), (11, 1977872), (13, 1673584), (16, 1359787), (22, 988936), (26, 836792), (37, 588016), (44, 494468), (52, 418396), (74, 294008), (88, 247234), (104, 209198), (143, 152144), (148, 147004), (176, 123617), (208, 104599), (257, 84656), (286, 76072), (296, 73502), (407, 53456), (481, 45232), (514, 42328), (572, 38036), (592, 36751), (814, 26728), (962, 22616), (1028, 21164), (1144, 19018), (1628, 13364), (1924, 11308), (2056, 10582), (2288, 9509), (2827, 7696), (3256, 6682), (3341, 6512), (3848, 5654), (4112, 5291)]