18103215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 34062336

約数和(自身を除く): 15959121

約数列:

[1, 3, 5, 13, 15, 17, 39, 43, 51, 65, 85, 127, 129, 195, 215, 221, 255, 381, 559, 635, 645, 663, 731, 1105, 1651, 1677, 1905, 2159, 2193, 2795, 3315, 3655, 4953, 5461, 6477, 8255, 8385, 9503, 10795, 10965, 16383, 24765, 27305, 28067, 28509, 32385, 47515, 70993, 81915, 84201, 92837, 140335, 142545, 212979, 278511, 354965, 421005, 464185, 1064895, 1206881, 1392555, 3620643, 6034405, 18103215]

約数ペア:

[(1, 18103215), (3, 6034405), (5, 3620643), (13, 1392555), (15, 1206881), (17, 1064895), (39, 464185), (43, 421005), (51, 354965), (65, 278511), (85, 212979), (127, 142545), (129, 140335), (195, 92837), (215, 84201), (221, 81915), (255, 70993), (381, 47515), (559, 32385), (635, 28509), (645, 28067), (663, 27305), (731, 24765), (1105, 16383), (1651, 10965), (1677, 10795), (1905, 9503), (2159, 8385), (2193, 8255), (2795, 6477), (3315, 5461), (3655, 4953)]