20112615

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 37604736

約数和(自身を除く): 17492121

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 61, 85, 153, 183, 255, 305, 431, 549, 765, 915, 1037, 1293, 2155, 2745, 3111, 3879, 5185, 6465, 7327, 9333, 15555, 19395, 21981, 26291, 36635, 46665, 65943, 78873, 109905, 131455, 236619, 329715, 394365, 446947, 1183095, 1340841, 2234735, 4022523, 6704205, 20112615]

約数ペア:

[(1, 20112615), (3, 6704205), (5, 4022523), (9, 2234735), (15, 1340841), (17, 1183095), (45, 446947), (51, 394365), (61, 329715), (85, 236619), (153, 131455), (183, 109905), (255, 78873), (305, 65943), (431, 46665), (549, 36635), (765, 26291), (915, 21981), (1037, 19395), (1293, 15555), (2155, 9333), (2745, 7327), (3111, 6465), (3879, 5185)]